Temperature Indicating Materials
General Product Catalog

Contents
Ever since 1965, NiGK Corporation has been responding to diverse market needs by developing products that use color
change to convey temperature, UV and dew levels at a single glance.
Our products can be largely divided into categories according to purpose: temperature indicating materials; temperature
indicating materials for food sterilization process; temperature indicating materials for process control; UV detection products; anddew detection products.

Cautions on Use ········································ 01
Temperature Indicating Materials

Ultraviolet indicating material

Temperature label LI ································· 02

UV LABEL TM ·············································· 10

Temperature label 3E ································· 02

Customized UV LABELTM (UV LABEL TM Application Products) ···· 10

Temperature label 4E ································· 03

UV LABEL for LED TM ·································· 11

Temperature label 5E ································· 03

Heat sterilization indicating material

Temperature label 8E ································· 03

RETOMARK TM ··········································· 12

Temperature label F ···································· 03

Dew indicating material

Temperature label Super Mini 1K ·················· 04

DEW LABEL TM ··········································· 12

Temperature label Super Mini 3K ·················· 04

Usage Examples and Product List

Temperature label Super Mini 3R ·················· 04

Temperature Indicator Usage Examples ····· 13〜16

Temperature label Mini ································ 05

Product List ·············································· 17

Temperature label 5S ·································· 05
THERMO TAPE TM ······································ 06
THERMO SHEET TM P-5·7 ··························· 06
THERMO SHEET TM C ································ 06
Number THERMO WAPPEN TM ····················· 07
Combination label A ·································· 07
Combination label TB ································· 07
Temperature label for Vacuums ····················· 08
Thermo Proof ··········································· 08
DEGMARK TM ············································· 09
DIGITAL THERMO TAPE TM ························· 09
Product Functionality
Changes color when a certain temperature is F o r c h e c k i n g

Reversible reached then changes back when the temperature t h e c u r r e n t
drops. Can be used repeatedly.

• Changes color when a certain temperature isreached, but does not change back even if thetemperature drops.
Irreversible • Changes color when UV intensity increases, butdoes not change back even in dark places.
• Changes color due to moisture from dew, butdoes not change back even if dry.

temperature

For checking
temperature
history
F o r d e te c t i n g
UV light
For checking
for dew

Changes color as the temperature rises then For temperature
Semichanges back with moisture when the temperature measurement
irreversible drops.

Cautions on Use

Temperature label , THERMO TAPE TM , THERMO SHEET TM and THERMO WAPPEN TM
Characteristics and usage methods of products presented in this catalog vary from type to type. To ensure proper use,please read carefully beforehand the cautions in this section and cautions given with product descriptions, as well asusage instructions provided with the product. Please direct any questions to NiGK Corporation Sales.

Color Changes• In this catalog, color-change temperature and color-change accuracy refer to the temperature and degree of accuracy at completion of a color change
after heating from room temperature at a rate of between 2 and 3°C/min under normal pressure. The actual color-change temperature may differ underparticular heating conditions.
• Reversible temperature indicating materials that change color at 50°C (low-temperature color: yellow) may change to an ocher color if exposed to direct
sunlight. This is a temporary phenomenon and the color will lighten over time. Temperature detection capability will not be affected.
• Reversible temperature indicating materials change color with an accuracy of ±2°C when the temperature is increasing. However, the color returns to
its original color at the temperature between 15 and 30℃ lower than the specified temperature when cooling at a rate of between 1 and 2℃/min.
• Temperature-indicating pigment of reversible temperature indicating materials may react to Bakelite surfaces, resulting in an inaccurate color change.
• The performance of irreversible temperature labels which change color at 130℃ or higher may be changed if it is exposed to temperatures in the−10℃ from the specified temperature.

• The temperature-indicating element of irreversible temperature labels may show slight coloration even before the temperature increases, but
performance will not be affected and it will be obvious when the color changes at the speciﬁed temperature.

Afﬁxing Labels• Make sure to clear the surface of all water, oil, rust, dust and dirt. Dirty or uneven surfaces could result in the label falling off or an inaccurate color
change.
• To affix the label, peel off the release liner and apply the label to the surface on which the temperature is to be measured, gently pressing down on itwith your ﬁnger or a cloth. Avoid strong rubbing, which may scratch the label or cause other damage affecting the ability of the product to indicate
temperature properly.
• Where possible, affix the label to a flat surface as curved surfaces and corners could lead to an inaccurate color change.
• Do not alter the shape of a label. Modifying a label, for example by cutting it with a utility knife, may affect the label’s durability or lead to an inaccurate
color change. (This does not apply to Thermo TapeTM.)

Usage and Storage Environments• Do not use products in high-pressure or high-vacuum environments, or in microwave ovens or other induction heating applications, as it could lead toan inaccurate color change.
• Store in a cool dark place prior to use. Products specified as requiring cold strage should be kept refrigerated.
• Products specified for indoor applications should be used indoors. Using these products in conditions where they are exposed to the effects ofsubstances such as water, oil, solvents and plasticizers (e.g. through surface adhesion, soaking from underneath, or in atmospheres consisting of such
substances) may lead to an inaccurate color change.
• NiGK Corporation will not accept any liability for damages incurred as a result of using the product or applying measurements given by the products.

Period of Effectiveness of Temperature Indicating Materials
Product
Temperature label

Type

Indoor Outdoor
use
use

Product

THERMO SHEET TM

5 years 3 years

Number THERMO WAPPEN TM

3 years Not
suitable

Structure (Temperature label LI – 8E)

Temperature label Mini
Combination label

Indoor Outdoor
useuse

THERMO TAPE TM

5 years 3 years

Temperature label
Temperature label Super miniType

Temperatureindicating element

5 years 3 years

Release liner1

FilmAdhesive
Non-colorchange ink
Film
AdhesiveTemperature Indicating Materials

Irreversible

Features

Temperature label■ POINT!! Available for 40°C – 250°C■ This temperature label changes color at the speciﬁed temperature. It is an irreversible temperature indicator,

meaning that once the color changes it will not return to its original state.

■ The temperature-indicating element is sealed by heat-resistant ﬁlm, protecting it from water, chemicals, oil and the surrounding

atmosphere. (LI, F, 3E, 4E, 5E, 8E, and Combination)■ The backing of the temperature label is coated with heat-resistant adhesive, meaning the release liner simply needs to bepeeled off before afﬁxing the label to the area where the temperature is to be measured.

LI

Before color change

After color change
Temperatureindicating
element

Single temperature
indicating model

Base

Temperature hasrisen above 70°C

* The diameter of the temperature-indicating element is 11mm for LI-40 to 105, and 8mm for LI-110 to 250.
Type

Color-change Before color After color
changechangetemperature °C

White
White
White
White
White
White
White
White
White
White
White
White
White
White
White
White

Color-change
accuracy

Type

JAN code

Blue
Black
Red
Deep indigo
Green
Black
Red-orange
Dark redBlue
Deep indigo
Red
Black
Dark redGreen
Deep indigo
Red-orange

Color-change Before color After color
changechangetemperature °C

White

Blue

White

Black

White

Black

White

Black

White

Black

White

Black

Color-change
accuracy

JAN code

Pale yellow Black
Pale yellow Black
Pale yellow Black
Pale yellow Black
Pale yellow Black
Pale yellow Black
Pale yellow Black
Pale yellow Black
Pale yellow Black40 labels per box

3E

3 temperatures at
10°C intervals

Before color change

After color change

70

70

80

90

70

70

80

90

Temperature has risen
to around 80°C
* Label dimensions are 15×30mm for 3E-40 to 110, and 17×32mm for 3E-120 to 230.
Type

Temperature combination (°C)

Color-change
accuracy

Type

JAN code

Temperature combination (°C)

Color-change
accuracy* Color changes at each temperature are the same as for LI.

2

JAN code

20 labels per box

Irreversible

Temperature label■ POINT!! Stepped indication at 5°C or
10°C intervals
65

Beforecolor change

4 temperatures at
5°C intervals

65

70

75

80

Temperature has risen
to around 70°C

65

After
color change

65* Color changes at each temperature are the same as for temperature label LI.
Type

Temperature combination (°C)

Color-change
accuracy

Type

JAN code

70

75

80

Color-change
accuracy

Temperature combination (°C)

JAN code

20 labels per box

5E

Beforecolor change

5 temperatures at
5°C or 10°C intervals

75
75

80

85

90

95

Temperature has risen
to around 80°C

After
color change* Label dimensions are 15×43mm for 5E-50 to 100, and 17×45mm for 5E-125 to 210.
color After color Color-changeType
Temperature combination (°C) Before
Type
JAN codechangechangeaccuracy

75
75

Temperature combination (°C)

8085

Before color After color
changechange90

95

Color-change
accuracy

JAN code

White BlackWhite BlackWhite Black

Pale yellow BlackWhite Black

Pale yellow Black
20 labels per box

8E

Beforecolor change

8 temperatures at
10°C intervals

Temperature has risen
to around 80°C
* Color changes at eachtemperature are the same as fortemperature label LI.
Type
Temperature combination (°C)

Aftercolor change
Color-change
accuracy

JAN code

20 labels per box

F

For small spaces onindoor/outdoor
equipment

Before color change

After color change

8080

Temperature hasrisen above 80°C
Type

Color-change Before color After color
changechangetemperature °C

White

Color-change
accuracy

Type

JAN code

Red

White Deep indigo

White

Red

White

Black

White

Green

White Dark red

White

Black

White

White Deep indigo

White Dark red

White Red-orange

Blue

White Deep indigo

Color-change
accuracy

White

Blue

White

Black

■ Indoor/outdoor monitoring of heat generation/heating temperature■ Monitoring of heat treatment■ Inspection of heat generation by power substation equipment/plant machinery ■ Temperature monitoring during distribution
3

JAN code

GreenWhite Red-orange
White

Applications

Color-change Before color After color
changechangetemperature °C

40 labels per box

Temperature Indicating Materials

4ETemperature Indicating Materials

Irreversible

Features

Temperature label
Super mini

■ POINT!! For temperature monitoringof small parts■ Temperature label Super mini and Mini are extremely small labels.
■ These labels are widely used for monitoring the temperature of small parts.

1K

Before color change

Mini-sized labels(5×5mm)Single temperature
indicating model

After color change

Temperature has risen
to around 70°C

* The white dot disappears when the color-change temperature is reached (same for 1K, 3K and 3R)
Type

Color-change
temperature°C

Color-change

Color-change
accuracy

Type

JAN code

Color-change
temperature°C

Color-change
accuracy

Color-change

White

White

Black

Black

JAN code

200 labels per box

3K

Before color change

Mini-sized
3-temperature type

80

85

90

After color change

80

85

90

Temperature has risen
to around 85°C
Type

Temperature combination (°C) Color-change

Color-change
accuracy

JAN code

White
Black

20 labels per box

3R

Before color changeRound mini-sized
3-temperature type

70

80

After color change

70

70

75

Temperature has risen
to around 75°C

* The first color-change temperature in the combination is represented by the white dot on the right-handside beneath the indicated number. The temperatures continue in clockwise order.
Type

Temperature combination (°C) Color-change

Color-change
accuracy

JAN code

Applications

White■ Monitoring for abnormal heat generation of electronic parts such asBlacktransistors, ICs, LSIs, resistors, capacitors, and inductors■ Inspection of heat generation by small motors such as circuit cooling
fan motors and drive motors■ Checking the ambient temperature during product transportation or
20 labels per box

4useIrreversible

Temperature label Mini

■ POINT!! Single temperature indicating
model

Beforecolor change

Ideal for monitoring
the temperature ofsmall parts

Aftercolor change

50
Temperature hasrisen above 50°C

Color-change
temperature°C

Type

Color-change

Color-change
accuracy

Type

JAN code

Color-change
temperature°C

Color-change

White

White

Red

Red

Color-change
accuracy

JAN code

200 labels per box

Irreversible

Temperature label

Features■ POINT!! 5-temperature steppedindication at 5°C intervals■ Temperature indicator label 5S has 5 temperatures on a single label, making it ideal for temperature

measurements in test situations.

5S

80

75

80

75

95

85

After
color change

90

Beforecolor change

95

Ideal for monitoring
the temperature ofsmall parts

46

85

90

Temperature hasrisen to around 85°C
* Color changes at each temperature are the same as for LI.
Type

Temperature combination (°C)

Color-change
accuracy

JAN code

Caution on Use■ Super mini, mini and S are designed for indoor use
and therefore should be used only in indoor
environments. Using these products in conditions
where they are exposed to the effects ofsubstances such as water, oil, solvents andplasticizers (e.g. through surface adhesion,
soaking from underneath, or in atmospheres
consisting of such substances) may lead to aninaccurate color change.

20 labels per box

5

Temperature Indicating Materials

MiniTemperature Indicating Materials

Reversible

THERMO TAPE

Features

TM■ POINT!! Strips showing the current
temperature■ THERMO TAPE TM is a reversible indicator that changes color at the speciﬁed temperature and reverts to its originalcolor when cooled. It can be used repeatedly.

■ Both sides of the tape retain the original color (before changing), making any color change due to a rise intemperature obvious at a single glance.

■ As a tape, it can be cut into strips of any length.

TR

Before color
changeSingle temperature
indicating model

After color
change(Duringheating)
Color-change
temperature°C

Type

Low-temperaturecolor

High-temperaturecolor

Reddish yellow

Reddish orange

Yellow

Yellowish orange

Bright yellowish red

Dark brown-purple

Red

Dark brown-purple

Color-change
accuracy

JAN code

25 labels per box

Reversible

THERMO SHEET

Features

TM■ POINT!! Temperature-indicating sheet■ Sheets with a combination of reversible temperature indicating materials. There are two types: 2-temperatureand 5-temperature.

■ The 2-temperature sheet is suitable for indicating warning and danger temperatures. (P-5·7)■ The 5-temperature sheet is suitable for measuring temperature and checking for temperature increases. (C)■ Color-change temperatures and color-change tones are the same as for Number THERMO WAPPENTM.

P-5·7

Before color
change2-temperature type

After color
change(During heating)TR-70 (changes at 70°C,
red dark brown-purple)

TR-50 (changes at 50°C,
yellow yellowish orange)C

5-temperature type

Before color
changeAfter color
change(During heating)* Color changes and color tones are the same as for Number THERMO WAPPEN TM
Type

Color-change temperature°C

Qty per box

Color-change
accuracy

JAN code

Applications■ Preventing burns during heating processes■ Monitoring of warning and danger
temperatures6

Features

TM■ POINT!! Number of heating

temperature appears■ Number of heating temperature appears.
■ The number disappears when the temperature drops, allowing repeated use.

WR

Before color
changeTemperature appears
in digital format

Color-change
temperature°C

Type

Low-temperaturecolor

High-temperaturecolor

Reddish yellow

Reddish orange

Yellowish orange

Bright yellowish red

Yellow

Yellowish orange

Yellowish red

Dark brown-purple

Bright yellowish red

Dark brown-purple

Red

Dark brown-purple

Red

Dark brown-purple

Color-change
accuracy

Mixed

Irreversible
Reversible

JAN code

120 labels per box

Combination label

Features

After color
change(Duringheating)

Color-changing
area

No color change* WR-Mixed: 24 labels each for 50°C, 55°C, 60°C, 65°C and
70°C (120 labels per box)

■ POINT!! Check temperature history andcurrent temperatureThis combination label consists of an irreversible temperature-indicating element (temperature label)at the center of a reversible Thermo Sheet TM base.
Trace temperature history with the irreversible label and current temperature with the reversible sheet.

A

Beforecolor change

For checking past andcurrent temperature

Type

Temperature-indicating element (irreversible)
Color-change
temperature°C

Color-change

Size

Base (reversible)
Color-change temperature(Low-temperature color
high-temperature color)

Size

DuringheatingAftercooling

DuringheatingAftercooling

JAN code

White BlackWhite Red-orange

70°C
Red Dark brown-purple
50°C
Yellow Yellowish orange

White Dark red
White BlueWhite Deep indigo
White Red

80 labels per box

TB

Beforecolor change

For checking past andcurrent temperature

Type

Temperature-indicating element (irreversible)
Color-change
temperature°C

Color-change

Size

Base (reversible)
Color-change temperature(Low-temperature color
high-temperature color)Size

JAN code

White BlackWhite Red-orange
White Dark red
White BlueWhite Deep indigo

70°C
Red Dark brown-purple
50°C
Yellow Yellowish orange

White Red

7

40 labels per box

Temperature Indicating Materials

Number THERMO WAPPEN

Reversible

Temperature label
for Vacuums

Temperature Indicating Materials

Irreversible

Features■ POINT!! Check temperature in 1Pa to normalpressure environments at a single glance■ Temperature monitoring labels for use in 1Pa to normal pressure environments.
■ Monitor temperature without wires or power simply by afﬁxing the label to the area where temperature is tobe monitored.

■ The temperature-indicating part changes color irreversibly from pale yellow to black when the speciﬁedtemperature is reached, allowing the temperature history to be traced.

■ Measurements with color-change accuracy of ±2-4°C are possible even under reduced pressure.
■ Labels are made using low-outgassing materials to reduce the release of outgas.

Before heating

After heating

100 105 110 115

100 105 110 115* We can see the area has been heated to around 105°C.

Type

color
Temperature combination °C BeforechangeAfter color
changeColor-change
accuracy

JAN code

Pale yellow Black
Pale yellow Black
Pale yellow Black
Pale yellow Black
Pale yellow Black
Pale yellow Black
Pale yellow Black

10 labels per box

Irreversible

Thermo Proof

Features■ Thermo Paint TM in label form.
■ Special adhesive on the backing enables afﬁxing

Before color change

After color change

to surfaces.

* Colors shown are approximate colors.
Type

Indication Color-change
temperature Original color Color-change

JAN codeLight greenish blue Reddish grayLight pink

Black

Bright bluish gray Brown-black
Light blue-green
Gray-blackWhite

Brownish gray

Blue
White

Brown white
Greenish grayPurpleWhite
10 labels per box

Non-RoHS Compliant

Caution on Use■ For color-change characteristics, refer to the technical brochure for irreversible Thermo Paint .
■ Store in a dark place at room temperature.
■ At temperatures below 20°C, the flexibility of labels may detoriorate, causing cracks to appear.
■ At temperatures below 15°C, the adhesive power of labels may deteriorate and they may no longer stick. In such instances, adjust theTMtemperature of both the label and target surface to around 25°C.

■ The adhesive power of labels deteriorates over time. You are advised to use the labels as soon as possible after purchase.
■ Products should be used within 1 year of purchase.

8

Irreversible■ POINT!! For mass production/process control

NEW■ The color changes if heated to above the speciﬁed temperature.
■ Available at a lower price depending on the quantity ordered.
■ Color-change temperature, color tones and designs can be modiﬁed to suit the application.

Features

Design example 1
Before

After

50

6.5

Design example 2
Before

After

Image
8

Reversible

DIGITAL THERMO TAPE

Features

TM

3■ POINT!! Show current temperature
as a number (in green)■ Encapsulated liquid crystals are printed to polyester film using a special technique.
■ Color changing occurs as numbers appear and disappear. Simply take the green number as the current temperature.
■ The numbers change color in this order as the temperature rises: black → red-brown→ green→ blue→ navy blue.
■ As the temperature decreases, the numbers return to their original color in reverse order.

D

Ascertain the current temperature from a liquid-crystal indicator

Example of a customized design

Current temperature

Type

Temperature range °C Temperature interval Color-change accuracy

JAN code

30 labels per box

Caution on Use■ If DIGITAL THERMO TAPE is left for long periods in areas exposed to direct sunlight or areas of high humidity, the UV light or moistureTM

may affect the properties, and therefore the color-changing capability, of the liquid crystals.

■ DIGITAL THERMO TAPE has no resistance to acids and alkalis.
■ Avoid contact with organic solvents.
■ With D-50, the numbers may start to pale if heated for around 10 hours at 100°C, but color-changing performance will not be affected.
■ Also, green numbers may appear simultaneously in low- and high-temperature areas during temperature decrease. In this case, theTMhigher temperature is the current temperature.

■ As a guideline, this product should be used indoors and for up to 3 years.

9

Temperature Indicating Materials

DEGMARKTM

Ultraviolet indicating material

Irreversible

UV LABEL

Features

TM■ POINT!! Conﬁrm UV irradiation using color■ Changes from a non-colored state to a colored state when exposed to UV light.
■ The change in color can be used to conﬁrm the level of UV irradiation.
■ Once changed, the color is irreversible and will not disappear.
■ Four types of varying sensitivity are available for different purposes.
■ Adhesive on the backing allows easy afﬁxing to diverse surfaces.
Before color change

After color change

UV light
18mm

18mm

(Table1) Color Chart

Type

UV-S

(Table2) Test results based on our test conditions※
Low

Irradiation Level

Light Source

High

UV-S

Irradiation dose Results(approx.)
Reference

Metal-halide lamp

Super-high sensitivity

UV-H

Metal-halide lamp

UV-M

Metal-halide lamp

UV-L

Sunlight

High sensitivity

Medium sensitivity

Low sensitivity※Color results in (table2) depend on the irradiation device, test procedure and product lot.

How to use

100 labels per box■ UV LABEL gives no quantitative information, but gives only qualitative information by color-change.
■ The coloring result depends on multiple factors. The same radiation intensity and wavelength do not necessarily result in the same color result if
the other conditions and the machine are different.

■ Firstly, you get the reference color data (A) with a specific cycle (B) and lamp (C).
■ As long as the B and C are same, the result should be A.
■ To avoid the difference between lot, you are recommended to get a new reference data for new lot.

Applications

Irreversible■ Determining the hardness of UV-curable resins (inks, paints, adhesives, etc.)■ Maintenance (determining the time for replacement) of UV lamps (metal-halide, mercury-vapor, germicidal lamps)■ Checking sunlight UV levels■ Checking gamma-ray or electron beam irradiation (S, H)

Customized UV LABEL

Features

ExamplesTM

Application Product■ We customize sizes, shapes and designs at your request.
■ In general, sensitivity and color changing tone will be the same as for the standard product.
■ Price and delivery dates vary according to design and quantity. Please inquire for details.

Caution on Use

Tape: For use together with alabeler in monitoring anirradiation line

■ Color tones will vary according to the irradiation conditions.
■ The labels change color even from exposure to room
lighting. Avoid exposing unused labels to light.

■ For UV-S and UV-H types, colors may fade if the color
change is insufficient or if stored in hot environment
after color change.

Ultra-compact size: For small
target areas (e.g. 5×5mm)
Other: Large size for checking UVdose distribution (e.g. A4 size)
10■ Do not apply directly to skin.
■ Please do not cut the label to maintain the adhesion strength.

Irreversible

Features■ POINT!! Conﬁrm LED-UV irradiation using colorNEW■ Clear color-change with UV radiation exposure.
■ Remain unchanged after the color-change reaction.
■ Just apply on the object to be monitored.
■ Usable for UVA wavelength (365nm or longer) that conventional types did not cover.

Before color change

After color change

UV light
10mm

10mm

LED-1

(Table2) Test results based on our test conditions※(Table1) Color Chart

Type

JAN code

LED-14582130423370

Low

Irradiation Level

Light SourceHigh

Irradiation dose Results(approx.)
Reference

179
UV-LED lamp
（wavelength：385nm）

LED-2

2790

4582130423394※Color results in (table2) depend on the irradiation device, test procedure and product lot.

How to use■ UV LABEL for LED gives no quantitative information, but gives only qualitative information by color-change.
■ The coloring result depends on multiple factors. The same radiation intensity and wavelength do not necessarily result in the same color result
if the other conditions and the machine are different.

■ Firstly, you get the reference color data (A) with a specific cycle (B) and lamp (C).
■ As long as the B and C are same, the result should be A.
■ To avoid the difference between lot, you are recommended to get a new reference data for new lot.

Caution on Use

100 labels per box■ Color tones will vary according to the irradiation conditions.
■ The labels change color even from exposure to room lighting. Avoid exposing unused labels to light.
■ Do not apply directly to skin.
■ Please do not cut the label to maintain the adhesion strength.

11

Ultraviolet indicating material

UV LABEL for LED

TMRETOMARK™

Heat sterilization indicating material

Irreversible

Features■ Three types available for high-temperature boil-in-bags sterilization down to low-temperature boiling sterilization.

Color tones also vary depending on heating temperature and time, allowing different conditions to be detectedwith the same type. Select a RETOMARKTM according to your intended conditions.
■ As it is heated, the color of the indicator gradually turns from cream to brown.
Before color changeType

After color change

Color-change temperature (°C) Heating time (min.)
AC110-134

R1
R2
R3

5 - 30AC100-120

5 - 15

Boil 90-100

30 - 120

Boil 70-100

3 - 60Applications

JAN code

High-temperature retort sterilization
Retort sterilization
Boiling sterilization
500 labels per box

Color-Change Guides

The guides below show color tone changes when heated at a specific temperature.
R2 retort heating

R3 boiling
Temperature (°C)

Temperature (°C)

Temperature (°C)

R1 retort heating

Time (min.)Caution on UseTime (min.)Time (min.)■ Actual color tones may differ from the above guides. Please conﬁrm color tones under your intended usage conditions in advance.
■ RETOMARK TM gradually turns brown if stored for a long period of time at room temperature. Please store in a refrigerator both before andafter use.

Dew indicating material

Irreversible

DEW LABEL

Features

TM■ POINT!! Checks for dew condensation using color■ Uses color changes to conﬁrm the presence of dew.
■ The color change is irreversible. Once changed, the color will not return to the original color, even if dried.
■ Adhesive on the backing allows easy afﬁxing to diverse surfaces.
■ Labels with customized sizes and designs can be supplied on request.

Before color change

After color changeDewcondensation(Indicator part)* Color changing varies according to the dew conditions (surrounding
temperature/humidity, surface temperature/heat capacity of the object,wind conditions, etc.). Too much water deposited on the label may resultin the pigment running and no color appearing.
Type

Color-change

Gray

JAN codeBlue
200 labels per box

121. Monitoring manufacturing process

130
150
140
130

130

130

*Electric ovens in a manufacturing line

140

150

Example of affixing 3E-130

Recommendation: Irreversible type
(Label can check if the temperature reaches the set point)*UV irradiation process for printings or manufacturing
Recommendation: “UV LABEL for LED” or “UV LABEL”(Label can check if the UV intensity level was good enough)13

Example of affixing UV-S

Temperature Indicator Usage Examples

Applications of Temperature Labels

Temperature Indicator Usage Examples

2. Monitoring abnormal heat

80℃

*Joint of electrical transforming equipment
Recommendation: Irreversible type
(Confirming abnormal heat record is possible)

Example of affixing LI-80

70

70

80

90

*Train Axles
Recommendation: Irreversible type
(Finding out an indication of axle trouble)
Steam

Example of affixing 3E-70*Pipings for steam or hot water
Recommendation: Reversible type
(Preventing any burn in a work place)

Example of affixing TB-65
14

70

70

80

70

90

70

80

90

70

70

80

90

70

70

70

80

70

90

70

80

90

80

90

70

70

80

90

*Busbars in switchboard
Recommendation: Irreversible type
(Confirming abnormal heat due to looseness)

Example of affixing 3E-70

50

50

60

70

50

50

60

70

*Motors or Oil pressure pumps
Recommendation: Irreversible and Reversible type
(Detecting abnormal heat to avoid any defects)

Example of affixing THERMO SHEET C and 3E-50

3. Monitoring Disinfection process for foods or related goods

R3

R3*Retort ovens in a food processing
Recommendation: Retomark R1, R2 and R3(Confirming certain time and temperature for disinfection)
15

Example of affixing R3

Temperature Indicator Usage Examples

70Temperature Indicator Usage Examples

Temperature Indicating Materials – Usage Examples
No power supply, no wiring required.
Just aﬃx the label to the areas to be monitored.

For checking the manufacturing process
Heat treatment process

Temperature
Label 3E

For detecting abnormal
temperature rise of the outdoor tank

For the maintenance ofPower Distribution Equipment

Combination Label

Temperature Label LI●Indicates the highest
temperature●Single indicator type of high visibility

UV irradiation process

UV LABEL● For checking past andcurrent temperature（S）●Conﬁrms UV irradiation
using color

Retort sterilization process

RETOMARK
For detecting abnormal temperature rise of
the motors and pumps, etc.

●For monitoring moist heator boiling sterilization

Temperature
Label 5E

Vacuum deposition /Dry etching process

Temperature Labelfor Vacuums●Indicates the highest
temperature●Indicates the highest temperature

For preventing burns from heated steam pipes

Number
THERMO WAPPEN●Shows current
temperature as a number

For monitoring temperature of the products

DIGITAL THERMO TAPE●Shows current temperature
as a number

For monitoring abnormal
temperature rise of the products

Temperature Label
Super Mini 3K

For detecting dew condensation in precision equipment

DEW LABEL●Indicates the highest temperature●Color change indicatesthe presence of dew

16

Product Types

Temperature Indicating Materials
Temperature label LI

40 to 250

Temperature label 3E

40 to 250

Temperature label 4E

50 to 110

Temperature label 5E

50 to 250

Temperature label 8E

50 to 160

Temperature label F

50 to 125

Temperature label Super Mini 1K

40 to 125

Temperature label Super Mini 3K

40 to 150

Temperature label Super Mini 3R

40 to 150

Temperature label Mini

50 to 125

Temperature label 5S

50 to 115

THERMO TAPE TM

40 to 70

THERMO SHEET™ P-5·7

50 to 70

THERMO SHEET™ C

50 to 70

Number THERMO WAPPEN™

40 to 70

Combination label A

50 to 90

Combination label TB

50 to 90

Temperature label for Vacuums

40 to 210

Thermo Proof

250 to 450

DEGMARK™

40 to 140

DIGITAL THERMO TAPE™

-6 to 100

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Page

Place

Draw

Paint

Features
Afﬁx

Semi-irreversible

Irreversible

Temperature
range (°C)

Reversible

Product

Usage method

Single temperature indicating model02

3 temperatures at 10°C intervals

02

4 temperatures at 5°C intervals

03

5 temperatures at 5°C or 10°C intervals

03

8 temperatures between 50°C and 160°C at 10°C intervals

03

Small single temperature indicating model03

Mini-sized single temperature indicating model04

Mini-sized type with 3 temperatures at 5°C or 10°C intervals

04

Round mini-sized type with 3 temperatures at 5°C or 10°C
intervals

04

Single temperature indicating model05

5 temperatures at 5°C intervals

05

Current temperature indication on strips

06

Checking current temperature above 50°C and 70°C

06

Current temperature between 50°C and 70°C, 5
temperatures at 5°C intervals

06

Number of heating temperature appears

07

Rectangular type for checking past and current
temperature

07

Round type for checking past and current temperature

07

Check temperature in 1Pa to normal pressure environments
at a single glance08

4 types of paint on a single sticker

08

For design flexibility and low cost

09

Show current temperature as a number (in green)

09

Changes color with UV light10

Create your own original design

10

Changes color with UV light11

Ultraviolet indicating material
UV LABEL™

—

Customized UV LABEL™
(UV Label TM Application Product)—

UV LABEL for LED™

—

●
●
●

70°C to 134°C
3-120 min.

●●

For monitoring retort and boiling sterilization

12

—

●

●

Color change indicates the presence of dew

12

Heat sterilization indicating material
RETOMARK™
Dew indicating material
DEW LABEL™

Please inquire about usage environments

17

Product List

Color-changing
function

Specifications of products presented in this catalog may change without prior notice.
Indicator color changes in this catalog are printed and may differ slightly from actual colors.
Please also feel free to contact us about chemical indicators, which are not included in this catalog.
Names of products presented in this catalog are trademarks or registered trademarks of NiGK Corporation only in Japan.

ISO 9001 Certified
NiGK Corporation products undergo rigorous quality management in accordance with the ISO 9001 standard before delivery to the customer.

Distributor

Manufacturer
From the Ocean to Outer Space

Head Office & Kawagoe Plant
21-2 Matoba-shinmachi, Kawagoe, Saitama, 350-1107 Japan
FAX：+81-(0)49-231-1334
Tokyo Sales Office
TOKYU BLDG. EAST NO.5, 2-25-5 Minami-ikebukuro
Toshima, Tokyo, 171-0022 Japan
TEL：+81-(0)3-3986-3910 (English)
FAX：+81-(0)3-3983-8286
E-mail：indicators@nichigi.co.jp
Website：www.nichigi.co.jp/en2023.12