Bubble absorption bottle (tube)

Bubble absorption bottle (tube) is one of the common absorption bottles in occupational health and environmental monitoring, suitable for collecting gaseous and vapor substances. For aerosol substances, the absorption efficiency is poor because they cannot rapidly diffuse to the gas-liquid interface like gas molecules.

Performance requirements:

The interface between the inner and outer pipes should be a standard grinding port, and the inner diameter of the inner pipe outlet should be1.00mm ± 0.1mm, with a distance of 4.5mm ± 0.5mm between the tip of the tube and the bottom of the outer tube. The airtightness should be good. Fill 5mL and 2mL of water into the large and small bubble absorption tubes, seal the inlet of the inner tube, and the outlet of the outer tubeAir samplerWhen extracting air at a flow rate of 1L/min, there should be no bubbles in the absorption tube, and the flow meter of the air sampler should not indicate the flow rate. Refer to Figure 2.1

GB/T 17061-1997 Technical Specification for Workplace Air Sampling Instruments

Common specifications:5mL, 10mL, 25mL, 50mL, 75mL, 125mL, etc.

Reference national standard:

GBZ/T 160.29-2004 Determination of Toxic Substances in Workplace Air Inorganic Nitrogen Compounds

1. Hydrogen cyanide and sodium cyanide isomers——Sodium barbituratespectrophotometer

Small bubble absorption tube

GBZ/T 160.29-2004 Determination of Toxic Substances in Workplace Air Inorganic Nitrogen Compounds

1. Nessler's reagent spectrophotometry for ammoniaphotometerlaw

Large bubble absorption tube

GBZ/T 160.32-2004 Determination of Toxic Substances in Workplace Air - Oxides

1. Ozone based eugenol spectrophotometric method

Large bubble absorption tube

2. Titanium tetrachloride hydrogen oxide spectrophotometric method

Large bubble absorption tube

GBZ/T 160.37-2004 Determination of Toxic Substances in Workplace Air Chloride

1. Methyl orange spectrophotometric method for chlorine gas

Large bubble absorption tube

2. Acid purple of chlorine dioxideR spectrophotometric method

Large bubble absorption tube

GBZ/T 160.51-2007 replaces GBZ/T 160.51-2004 for the determination of toxic substances in workplace air and phenolic compounds

1. Phenol's4-aminoantipyrine spectrophotometric method

Large bubble absorption tube

2. Method for determination of pentachlorophenol and its sodium salt by high performance liquid chromatography

Large bubble absorption tube

GBZ/T 160.54-2007 replaces GBZ/T 160.54-2004 for the determination of toxic substances in workplace air, including aliphatic aldehydes

1. Phenol reagent spectrophotometric method for formaldehyde

Large bubble absorption tube

GBZ/T 160.64-2004 Determination of Toxic Substances in Workplace Air - Unsaturated Aliphatic Ester Compounds

1. Collection of absorption solution of epoxypropyl methacrylate- Gas chromatography method

Large bubble absorption tube

GBZ/T 160.68-2007 replaces GBZ/T 160.68-2004 Determination of Toxic Substances in Workplace Air - Nitrile Compounds

1. Acetone cyanohydrin箊Sodium acidSodium barbiturate spectrophotometric method

Large bubble absorption tube

HJ 548-2016 replaces HJ 548-2009 for the determination of hydrogen chloride in fixed source exhaust gas. Silver nitrate volumetric method

Large bubble absorption tube:75mL