Only virginal material is used for the manufacture of the ready-to-use filter units to eliminate any possibility of interaction with the sample being filtered if used correctly. The filter units are for laboratory use only. The maximum operating temperature is 50°C.

Important: The use of syringes with a volume < 10 ml can generate high pressure which may exceed the maximum operating pressure (700 kPa/7 bar) of the filter units.

In filter units with integrated prefilters the dead volume is larger than specified.

EtO sterilized = non-pyrogenic in accordance with LAL test (USPXXIII)

Sensitivity: 0.25 EU/ml.

Deep filters made of glass microfibre and used as prefilters retain coarse particles. Ready-to-use filter units with integrated glass microfibre prefilters for intercepting the coarse particles and membrane filters for filtering the finer contamination. The combination of filters offers increased throughflow for less effort.

Cellulose-acetate membranes have an extremely low binding capacity for proteins.

Regenerated cellulose membranes have excellent chemical stability against organic solvents and can therefore be used for cleaning both aqueous and organic solutions.

Cellulose-nitrate membranes are membrane filters which are suitable for diverse applications involving the filtration of aqueous solutions.

Hydrophobic PTFE filters are used for the transparent filtration of aggressive organic solvents.

Applications:

• Filtration of aqueous samples in the determination of CSB, TOC; DOC

Features:

• Low blank values thanks to pre-flushed, hydrophilic cellulose-acetate membrane

• Filter cakes used for microscopic analyses
• Complete units with olive-type hose connection, 125 ml attachment and collecting container, both graduated
• Fast filtration thanks to replaceable Ø 50 mm mixed ester membrane filter with glass microfibre prefilter

Spartan

• Versatile ready-to-use filter unit with a hydrophilic membrane made of regenerated cellulose with minimum protein binding capacity
• First rate chemical resistance against conventional aqueous and organic HPLC solvents
• Spartan 13 and 30 are tested and certified at wavelengths of 210 and 254 nm for UV absorbent substances with water, methanol and acetonitrile, which means batch-for-batch quality. See www.schleicher-schuell.de/Zertifikate for the chromatogram for each batch.
• Spartan 13 has an extra-low dead volume of < 10 µl for the optimized use of small sample volumes

Applications:

• Ideal for HPLC sampling preparation to achieve reproducible results, guaranteed minimum amounts of UV absorbent, extractable elements

Membrane/Housing: RC/PP

Connection in/out: LLW/LM

ZapCap®

Applications:

• Cellulose-acetate membrane filter (CA) with extremely low protein binding for cell culture media and other aqueous solutions.

Features:

• Complete 500 ml units with olive-type connection for attaching bottles (bottle top).
• Connection seals against all standard 33 mm – 45 mm bottles.
• With integrated borosilicate prefilter for very high flow rates.