List of instruments and equipment that need indoor environment testing.

instrument name, model configuration and number of technical indicators for testing items

TVOC

benzene

GC589F FID for TVOC analysis, capillary sampling system, third-order temperature-programmed intelligent back door, thermal analysis device, a set of N2 computer for TVOC and benzene

chromatographic workstation, The printer is equipped with

TVOC analytical column 5m*.32mm (made in China)

special column 3m* for benzene analysis. .32mm

2 activated carbon tubes

2 tenax tubes

1 air generator HGA-2L 1

1 hydrogen generator HGH-3e

constant-current air sampler BS-S1

formaldehyde

ammonia visible spectrophotometer 723G makes 1 formaldehyde and ammonia according to the standard method of GB5325

.