For colour grading of clear, light yellow liquids such as clear oils, chemicals, petrochemicals and water. In particular, the Nessleriser 1209 is designed for companies wishing to comply with ASTM D 1209, which specifies a Nessleriser system for colour comparison using 100 ml tubes, with the 100 ml graduation mark 275 to 295 mm above the bottom of the tube. Each system covers a set measuring range and includes.

• A visual comparator instrument with a long path length, ensuring good sensitivity and accuracy when grading pale coloured samples
• A selection of Pt-Co/APHA colour standards - stable-coloured glass filters in test discs, which have been pre-calibrated to give direct Pt-Co Colour readings over set measuring ranges
• A standardised bench top light source to ensure constant and uniform lighting conditions for colour matching and, therefore, consistent and accurate readings
• Nessler cylinders of the appropriate path length