BUCHI Syncor Polyvap - Manual (Page 52)

Syncore ® Accessories
50 version E
Resistance of polyethylene sealing discs
A: Very good resistance: Sealing discs of PE (polyethylene)
may be used without restrictions
B: Good resistance: Sealing discs of polyethylene may be
used without restrictions
C: Moderate resistance: Sealing discs made of PE may
swell. Sealing discs may generally be used, but may
under some circumstances have to be replaced after
being used several times.
D: Poor resistance: Sealing discs deform. The sealing
discs of PE should be used only to a limited extent. We
recommend that the sealing discs be tested beforehand
(softening or wetting the sealing discs).
Solvent Resistance
Acetaldehyde A
Acetone A
Benzene B
Butanol A
Chloroform C
Diethyl ether B
Dimethylformamide A
Dimethylbenzene (Xylol) B
Dioxane A
Acetic acid A
Acetic acid anhydride A
Ethanol A
Ethyl acetate A
Hexane A
Isobutanol A
Isopropanol A
Methanol A
Methylene chloride B
Nitrobenzene A
Phenol A
Propanol A
Sulphuric acid, fuming C
Carbon tetrachloride C
Tetrahydrofurane B
Toluene B
Triethylamine A
Trichloroacetic acid A
Trichloroethane C
Trifluoroacetic acid A
Vinylidene chloride (Dichloroethylene) D
Aqueous hydrogen bromide, saturated C
Aqueous hydrogen chloride, saturated A
Aqueous ammonia solution A
Aqueous caustic soda A
Aqueous nitric acid B
Table 6: Resistance of the polyethylene sealing discs
5 Appendix