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 100 µg/mL in Methanol: Water 90:10 is composed of a single analyte

This Certified Reference Material at a concentration of 10 µg/mL in 2-5% Nitric Acid is composed of 4 analytes

0 mg/mL in Dichloromethane is composed of 18 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.