乙二醇二丁醚检测管BUTYL CELLOSOLVE C4H9OCH2CH2OH 10-1000ppm

290PII汽油/煤油检测管290PII       118SB苯气体检测管118SB BENZENE 5-300ppm       713室内空气甲醛检测管No.713 FORMALDEHYDE 0.01-0.50ppm       132SC氯乙烯CH2=CHCl气体测毒管132SC VINYL CHLORIDE 0.1-12.0ppm       132SB氯乙烯CH2=CHCl气体检知管132SB VINYL CHLORIDE 5-500ppm       132SA氯乙烯CH2=CHCl气体检测管132SA VINYL CHLORIDE 0.05-1.0%       237S醋酸乙烯酯CH3CO2CH=CH2气体检测管237S VINYL ACETATE 5-120ppm       216S正戊酸CH3（CH2）3COOH气体检测管216S N-VALERIC ACID 3-70ppm       111U正/十一烷CH3（CH2）9CH3气体检测管111U 10-140ppm       113SB2,2,4-*基戊烷（CH3）3CCH2CH（CH3）2气体检测管113SB 100-4000