GB/T 19138-2003Testing method of material insoluble in acetone for pesticides (English PDF)

Foreword

This Standard is revised based on International Pesticide Analysis

Collaborative Committee CIPAC MT 27 "Acetone insoluble matter

measurement method".

Main differences between this Standard and CIPAC MT 27 are as follows.

- conical flask and reflux condenser are directly matched without glass

interface, simplifying equipment;

- heat reflux is specified for 5 min to avoid decomposition of certain

pesticides for long heating time and to avoid errors caused by naked eye

observations;

- the specification of the sintered glass hoppers is unified with the domestic

model G;

- added the drying of the glass crucible funnel before filtration. It is required

to dry it in an oven at 110°C for 1 h to reach a constant weight.

This Standard was proposed by former National Petroleum and Chemical

Industry Bureau.

This Standard shall be under the jurisdiction of National Technical Committee

on Pesticides of Standardization Administration of China (CSBTS/TC 133).

The drafting organization of this Standard. Department of Applied Chemistry,

China Agricultural University.

Main drafters of this Standard. Li Nan, Pan Canping, Nan Ruiran, Qian

Chuanfan.

This Standard was issued for the first time.

Testing method of in acetone

material insoluble for pesticides

1 Scope

This Standard specifies the determination of acetone material insoluble in

pesticide original drug products.

2 Inspection method