Buchi Syncor Polyvap Manual de usuario descargar pdf (Pagina 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

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