The Filtration Systems tubular ultrafilter consists of a PVC housing and a PES membrane tube. The feed solution must be compatible with both components. Listed below is the chemical compatibility of the membrane tube.

Under normal operating conditions the tubular ultrafilter will operate at a pH of 2-11 and a temperature of 40-120F.

Acceptable Chemical List

The following chemicals have no significant impact on membrane properties.

• Inorganic salts
• Hydrochloric (5%)
• Nitric Acid (1%)
• Sulfuric Acid (5%)
• Formic Acid (5%)
• Acetic Acid (25%)
• Citric Acid
• Hexane
• Isooctane
• Cyclohexan
• Phenols
• Soy bean oil
• Olive oil

• Sodium Hydroxide (0.1N)
• Sodium Hydroxide (1.0N)
• Free Chlorine, 20 mg/l
• Free Chlorine 200 mg/l, 35C, 60 minutes
• Free Chlorine, 5,000 mg/l, 60C, 60 minutes
• Methanol (50%)
• Ethanol (70%)
• Isopropanol (100%)
• Butyl glycol (100%)
• Hydrogenperoxide (1,000 mg/l)
• Formaldehyde (1%)

Unacceptable Chemical List

The following chemicals will damage or dissolve the membrane.

• Ketones
• Esters
• Ethers
• Aldehydes
• Kerosene

• Aromatic hydrocarbons
• Aprotic solvents
• Silcones
• Halogenated hydrocarbons
• Formic Acid (100%)