Exel Hypodermic Needles, 18 Gauge x 1 1/2", Polypropylene Hub, Sterile, for Laboratory Use, 100/pk 8772-Powder This Certified Reference Material at

This Certified Reference Material at a concentration of 2900 µg/mL in DMSO is composed of a single analyte

0 µg/mL in Toluene is composed of 13 analytes

This Certified Reference Material at a concentration of 50:50 %v/v is composed of 2 analytes

Protease activity is detected spectrophotometrically with increasing optical density proportional to increasing enzyme activity and can detect nanogram quantities

This Certified Reference Material at a concentration of 100 µg/mL in PT Methanol is composed of 17 analytes

Exel Hypodermic Needles, 18 Gauge x 1 1/2", Polypropylene Hub, Sterile, for Laboratory Use, 100/pk 8772-Powder This Certified Reference Material atSuperior quality at an affordable price. Made of regular wall surgical stainless steel with polypropylene hub. They are available in a wide range of gauge and length combinations. FDA registered, CE Mark, ISO certified.