One-piece vacuum micro-distiller with sandwich vacuum vertical Thorn micro-distiller head double-layer distiller Thorn

KD concentration bottle scale concentration tube glass nitrogen blowing tube 10ml-200ml thin tube scale 1ml

Lee's specific gravity bottle 250ml dividing value 0.02ml density specific gravity bottle high precision glass

Long-necked Kjeldahl Flask eggplant-shaped flask standard mouth eggplant-shaped flask standard grinding mouth Kjeldahl nitrogen distillation flask equipment

Straight three-ball concentrator 250ml/500ml KD concentrator straight drop KD concentration tube vertical concentrator

Transparent U-shaped porous glass plate absorption tube U-shaped absorption bottle 10 25 50ml environmental protection instrument formaldehyde sampling bottle

Brown bubble absorption tube bottle Brown large bubble sampling bottle glass large gas absorption tube gas collector

Standard COD digester cod reflux digester Burr condenser tube COD heating tube complete glass instrument

Transparent Bubble Absorption Bottle White Big Bubble Sampling Bottle Glass Large Gas Absorption Tube Gas Sampling Bottle

Return water separator oil-water separator glass piston 24*2 standard grinding port

U-shaped porous glass plate absorption tube Brown 10 25 50MLU-shaped absorption bottle environmental protection instrument gas collection and detection

5221 glass PTFE 5221 rectification head with living core fractionation head Straight snake type rectification device can be equipped with a complete set

COD heating pipe digestion pipe full set of condenser pipe 41.8*210mm chemical laboratory constant temperature heater accessories

High temperature non-diversion flat beaker without mouth thickened high-type flow-benefit cup without mouth low-type chemical experiment beaker

Glass Grinding Mouth Erlenmeyer Flask Triangle Flask Reflux Condenser Ammonia Nitrogen Distillation Device Intubation Triangle Flask Detection

Straight-mouth oblique-mouth three-mouth flask standard ground-mouth reaction flask three-neck round-bottom flask distillation flask chemical experiment bottle