For semi-quantitative determinations.

Medium fast filtration, smooth.
For fat determinations, free from fats and resins. Ether soluble residue <0.1 mg for diam. 270 mm filters.

For determination of pH-value.
Roll length 5m, 10mm width. With three colour zones, without hydrophobic zone.
Plastic container with 1 roll of indicator paper and colour scale.

Fast filtration, smooth.

Medium speed, smooth.

Transparent, smooth. 40 g/m² paper
Block of 100 sheets.

Further weighing aids available on request.

For determination of pH- value.
Plastic dispensing reel with 1 roll of indicator paper and colour scale.

For determining water hardness.
Colour change from green to red.

Support materials for TLC ready-to-use layers

Glass plates: glass, ~ 1.3 mm thick, high requirements for weight, packaging and storage, ideal torsional strength, high temperature stability, susceptible to breakage, can not be cut with scissors, high resistance against solvents, mineral acids and conc. ammonia, suitability for aqueous detection reagents depends on the phase

POLYGRAM^®: polyester, ~ 0.2 mm thick, low requirements for weight, packaging and storage, low torsional strength, max. 185 °C temperature stability, not susceptible to breakage, can be cut with scissors, high resistance against solvents, mineral acids and conc. ammonia, very suitable for aqueous detection reagents

ALUGRAM^®: aluminium, ~ 0.15 mm thick, low requirements for weight, packaging and storage, relatively high torsional strength, high temperature stability, not susceptible to breakage, can be cut with scissors, high resistance against solvents, low resistance against mineral acids and conc. ammonia, limited suitability for aqueous detection reagents
Glass plates, POLYGRAM^®, ALUGRAM^®

• Silica 60
• Specific surface (BET) ~500 m²/g
• Mean pore size 60 Å
• Specific pore volume 0.75 ml/g
• Particle size 5 to 17 µm
• Standard grade
• Thickness of layer for analytical plates 0.25 mm, for preparative plates 0.5 and 1 mm
• For 2 mm preparative layers a slightly coarser material is used, indicators: manganese activated zinc silicate with green fluorescence for short-wave UV (254 nm)
• Binders: highly polymeric products, which are stable in almost all organic solvents and resistant towards aggressive visualisation reagents
• Binder system for Polygram^® sheets is also completely stable in purely aqueous eluents
• Available as glass plates, Polygram polyester sheets and Alugram aluminium sheets
• Available with or without fluorescent indicator (UV 254)

Medium filtration, smooth.

For determination of pH- value.
Plastic dispensing reel with 1 roll of indicator paper and colour scale.

Pack of 100 pieces.
Other sizes and weighing aids available on request.

Fast filtration, smooth, ashless.

For determination of pH value.
Roll length 5 m, 14 mm width. With 3 colour zones and 2 hydrophobic zones. The zones are separated by a hydrophobic barrier, which effectively prevents mixing of the reaction colours and increases mechanical stability.
Plastic container with 1 roll of indicator paper and colour scale.

Can be used up to a maximum of 200 °C. With organic binder.

• Fat determination in food and feed
• Determination of binder content in asphalt
• Analysis of soil contaminants
• Determination of additives in rubber and elastomers

Medium fast filtration, suitable for many applications such as for sulphides, lead chromate and calcium oxalate.

Combination phase for SPE of hydrocarbons from water acc. to DIN H53 / ISO DIS 9377-4

Special combination phase of sodium sulphate and Florisil^®.

Recommended application: hydrocarbons from drinking, surface and waste waters.

The syringe filters are used for filtration of suspended matter from liquid samples and are certified for HPLC. Standard CHROMAFIL syringe filters are color coded. CHROMAFIL Xtra syringe filters are labeled for method validation and certification. All CHROMAFIL syringe filters are autoclavable (121 °C and 1.1 bar for 30 min).
A hydrophobic membrane. Ideal for filtration of non-polar liquids and gases. It is very resistant to various solvents as well as acids and bases. By flushing with alcohol, followed by water, the original hydrophobic membrane can be made more hydrophilic.

Watesmo allows the quick and easy detection of water and water vapor in organic solvents.

Scope of supply:
1 reel (5 m length, 10 mm width)

Hydrophilic membrane for polar as well as non-polar solvents. The HPLC filter, especially suited for mixtures of water and organic solvents; for TOC/DOC determination; not cytotoxic, does not inhibit the growth of microorganisms and higher cells. Polyester filter with integrated glass fibre prefilter (GF/PET): recommended for solutions with a high load of particulate matter or for highly viscous solutions.

Hydrophilized polytetrafluoroethylene syringe filters labelled for method validation and certification

• Hydrophobic membrane with additional hydrophilic characteristics
• For polar and nonpolar solutions
• Resistant against all kinds of solvents as well as acids and bases

Medium-fast.

• Embossed
• For determination of sugar content, colour, essential oils and emulsions
• Weight: 75 g/m²
• Thickness: 0.25 mm

Screw neck vials for storage of liquid samples.

• Wide opening
• Short thread
• Flat bottom