A c e t i c

A c i d&A m m o n i aG a sA d s o r p t i o n

S h e e t

Adsorps gas harmful to cultural propertiesGAS ADSORPTION SHEETSuperior Adsorption Performance
The concentration of acetic acid gas and ammonia gasthat are harmful to cultural properties can be reducedand maintain. Furthermore, the sheet itself hardly emits
any of the gas it adsorped and contributes to maintaining
an environment inside exhibition case.

Easy to Use
Since the sheet is as thin as 0.24 mm, it can be easily cut inany shape or size. A pair of scissors is all what you need.

PAT Certiﬁed
The safety of the sheet has been proven by the PAT(Photographic Activity Test; a test to determine the chemical
influence on photographic materials that are more sensitive thanpaper materials).

Management with Indicators
The sheet can be replaced before the gas adsorption effectdisappears, making it easy to maintain and manage theimproved environment.

Improvement at Low Cost
Since no large-scale construction or equipment is required,
it is possible to easily take measures to protect culturalproperties.

Acetic acidindicator

Just after starting

Addressing the replacement

to useof sheet

Replacement

Replacement

Replacement

Replacement

Flexible Adjustment
Using the adsorption sheets in layers enables to adjust
the proper environment to the exhibits and the display
duration.
Just changing the number of sheets can adjust flexibly
against the change of air environment.

Ammoniaindicator

After the seal is opened, color change will start due tothe reaction, which will be a guide for sheet replacement.

Adsorption Performance
Elapsed time with concentration reduction
against acetic acid and ammonia emission resorces
300

Recommended value
for acetic acid concentration(170ppb)

200

Recommended value
for ammonia concentration（30ppb）

100

010Acetic acid

Elapsed time (days)

20

Data proves that in only a week after installing the sheet
dramatic improvement can be seen in an environment ofhigh acetic acid and ammonia concentrations.
After the installation, for 100 days, we have confirmed thatthe recommended acetic acid concentration of 170 ppb
and the recommended ammonia concentration of 30 ppb
or less set by the Tokyo National Research Institute forCultural Properties, Japan.

* The graph is the result of an in-house test and does not guarantee
performance. It varies depending on actual environmental conditions.
* The initial concentration of acetic acid in this test is 500 ppb or more.

30

Ammonia

How to Use

It can be easily taken measures by laying the sheet underexhibits.

The sheet can be easily cut in any shape or size.

Speciﬁcations
Gas adosorption sheet
Model

GA-SS10

Thickness

GA-SS300.24ｍｍ

Acetic acid indicator

Ammonia indicator

GA-RS

GA-RA
0.6ｍｍ

Dimension

W0.95m × L10m

W0.95m × L30m

W43mm × L28mm

WeightApprox. 1.5kg

Approx. 3.0kg

Approx. 0.5g

Storage

Store in cool and dark place

Store in a refrigerator (0℃ to 10℃)

* Please pay attention to the expiration date for use.
* It can be disposed of as combustible waste.

Speciﬁcations are subject to change without prior notice for quality and functional improvements.

Contact us
Manufactured by

1-42 Ujina-higashi 2-chome,
Minami-ku, Hiroshima, 734-8567 Japan
Tel : 81-82-252-7009
Fax : 81-82-253-7928

https://www.kumahira-safe.com/《NO.2722BENGLISH-2201》