Ready to use colour solutions that are prepared gravimetrically on a weight/weight basis and are designed to measure the visual colour of water supplies.

• Use either as calibration and/or quality control standards
• Designed specifically for use in ASTM analytical methods, and produced in accordance with ASTM D1500, D6045, D1209
• Traceable product certified by an independent laboratory
• Supplied in high quality, tamper-evident bottles