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NEW
Specifically designed for UA-PBDE column for phthalates analysis
This set consists of a guard column (UA Guard Column Ph) and a connection union (UAConnector) and is used to connect to the Frontier labs UA-PBDE column for phthalates analysis.
Using this product, the contamination of the separation column is minimized, and the frequencyof the replacement is reduced.

Features of UA guard column set Ph
1. Enhances the durability of separation
column2. Easy and simple replacement of guardcolumn
UA guard column Ph and UA connector【Structure】

The UA guard column is connected to one end of the UA connector and aUA-PBDE column to the other end, using special metal ferrules for sealing.

Pyrolyzer

Connection via UA connector(enlarged view)

Detector

NutCarrier gas

GC injector

VF metal ferrule D

VF metal ferrule D
UA-PBDE column
UA guard column Ph
Connection via UA connector

Union
Insert tube (deactivated)

GC

Specifications (UA guard column Ph)⚫ Designed specifically for phthalates analysis⚫ Compatible column: UAPBDE-15M-0.05F⚫ Stationary phase: Dimethylpolysiloxane⚫ Material: Deactivated stainless steel⚫ Size: Length 1.5 m, i.d. 0.25 mm, o.d. 0.47 mm, df. 0.1 µm⚫ Max use temperature: 380 ºC
Product nameProduct numberContents

UA Guard Column Set Ph

UAGU-K01

UA guard column Ph (1 ea.), UA connector (1ea.), VF Metal Ferrule D (3 ea.), and Wrench(6/8 mm, 2 ea.)

UA Guard Column Ph

UAGU-M15

UA guard column (2 ea)

UA Connector

UAGU-K02

UA connector (1 ea)

VF Metal Ferrule DMS402167

VF metal ferrule D (20 ea)

UA guard column Ph extends the life of separation column
To demonstrate the effect of the UA guard column Ph on the deterioration of a separation column, a durability
test* was performed by running 400 samples of 0.5 mg each of polyvinyl chloride (PVC) powder. Before andafter the durability test, samples containing seven phthalates specified in IEC62321-8 as standard samples
were analyzed, and the separation column was evaluated. After the durability test, the peak area of the BBP
decreased slightly with the guard column in comparison with that without the guard column. Also, after thedurability test, when the guard column was removed and the measurement was performed using only theseparation column, the peak area of BBP was restored, indicating that the separation column was protected.
* The repeated analysis of PVC is one of the harshest conditions for separation columns. The HCl generated by thethermal decomposition of PVC causes significant damage to the stationary phase of the separation column.

With guard column

Without guard column

DIBP

DBP

DEHP
DnOPBBP

Seven phthalates specified by IEC
DIBP : Di-isobutyl phthalate

Before durability test
DINP
DIDP

DBP: Di-n-butyl phthalate

BBP: Bis(butylbenzyl) phthalate

DEHP : Di(2-ethylhexyl)phthalate
DnOP : Di-n-octyl phthalate

After 400 runs of 0.5 mgof PVC powder

DINP : Di-isononyl phthalate
DIDP : Di-isodecyl phthalate

24365Retention time (min)4365Retention time (min)BBP peak area ratio (DEHP: internal standard)

1.0BBP peak area ratio

20.8
With guard column
Analysis performed after 400runs with separation column only.
(without guard column)

0.6
Without guard column
0.4

Guard column replacement
recommended every 400 runs.

0.20.00100

200

300

4000

Number of PVC samples
Analytical conditions: TD: 150 - 320 ºC (200 ºC/min, 0.5 min), GC Inj.: 300 ºC, Carrier: He 1 mL/min, Split ratio: 1/50,GC oven: 80 ºC - 320 ºC (50 ºC/min, 1.2 min), Detector: FID 320 ºC,
Durability test sample: 0.5 mg of PVC, Standard samples: 0.5 g each of seven phthalates specified by IEC

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