PVC stopcock

PYRAZINE-2-CARBOXYLIC ACID (3-BROMO-BENZYLIDENE)-HYDRAZIDE

Pyrex^?Addition funnel, graduated, pressure equalising, cylindrical with PTFE key

Pyrex^?Dropping funnel

PYRIDINE-2-CARBOXYLIC ACID (1-(4-NITRO-PHENYL)-ETHYLIDENE)-HYDRAZIDE

PYRIDO(1,2-A)QUINOLINYLIUM, CHLORIDE

Pyrrolidine-1,3-dicarboxylic acid 1-tert-butyl ester 3-ethyl ester

Q 99 2,2-DIMETHYL-2H-NAPHTHO(2,3-B)PYRAN-5,10-DIONE

Q136 2-(2,3-DIMETHYLBUTYL)-3-HYDROXY-1,4-NAPHTHOQUINONE

Q312 TETRABROMO-1,4-BENZOQUINONE

Quickfit^?bends with vacuum connection