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Reference

Specification Change: Ammonia No.3M and Ethyl ether No.161

04/07/2025Product
The product specification for Detector Tube No.3M Ammonia and No.161 Ethyl ether has changed.
For the detailed product specification refer to the link below and the instruction manual.
Detector Tube Name Detector Tube No. Change details
Ammonia Detector tube
(Expiry date 01.2028 or later)		 3M Measuring range( 10 - 1000 ppm → 7 - 1000 ppm )
Correction factor
Ethyl ether Detector tube
(Expiry date 04.2028 or later)		 161 Temperature correction
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