NTS 5PPM HYDROGEN CHLORIDE 5PPM SULFUR HEXAFLUORIDE BALANCE NITROGEN SIZE 150W TRACEABILITY STANDARD CGA 330 SCOTT GMACS / ALT 114 HCL+/-10% BLEND +/-4% ANALYTICAL SF6 +/-4% CERTIFIED ACCURACY PRODUCED BY PLUMSTEADVILLE- EXPLORATORY PRODUCTS ONLY CUSTOM MIX