Supel^TMFlash Cartridge

Supel^TM 层析色谱柱

Magnetic Screw Cap for Headspace Vials, 18 mm thread

顶空样品瓶的磁性螺旋盖，18 mm螺纹，1.5mm隔垫，100个装

Calcium carbonate

碳酸钙

Black plastic caps

黑色塑料盖

Clean Clay Loam

Nitrite-WP

Cyanide, Total-WS

Kjeldahl Nitrogen, Total (TKN)-WS

Ammonia-WS

Dodecyltrimethylammonium hydrogen sulfate

十二烷基三甲基硫酸氢铵