Instrument makes turbidity measurement clear

Instrument makes turbidity measurement clear

2020 series turbidimeters from LaMotte

An accurate turbidity measurement often provides nearly immediate results on whether potable or wastewater treatment is effective. The more accurate the turbidimeter is, the easier it is to pinpoint problems. The makers of the new ratiometric versions of the 2020 series turbidimeters from LaMotte believe they have their most accurate and precise instrument to date. 

The model 2020t and 2020i are portable hand-held units for use in the field or lab. The 2020t unit is compliant with the Environmental Protection Agency 180.1 standard using a tungsten light source while the 2020i is compliant to the ISO standard and ideal for high-range turbidity measurements. According to Ernie Rector, market manager for industrial water/wastewater for LaMotte, the new units are not only more accurate, they are user-friendly.

“The 2020t/i series are ratiometric meters, which improve on accuracy and ease of calibration,” he says. “The three modes — Nephelometric, Nephelometric ratio and Attenuation Units — allow the user to chose which best applies to their testing situation. Nephelometric for samples with turbidity below 40 NTU, Nephelometric Ratio for samples between 40-1,000 NTU and Attenuation Units for any sample above 1,000 NTU. The ‘i’ version is especially adept at reading turbidity in samples that have color in them.”

The optical system is protected in a waterproof chamber with a removable cup. The instruments are rated waterproof to the IP67 standard with sealed, rechargeable lithium batteries. A bold backlit display improves visibility for all seven language options included. 

“Our research and development team put several years of work into the development of this series,” Rector says. “It makes the calibration process much easier, and is especially good at reading turbidity in samples with color, which has always been a huge challenge in the field.”

The units are designed for low-turbidity drinking water applications, midrange industrial applications, and high-range environmental applications, such as wastewater effluent. Units come housed in a rugged, waterproof case complete with standards (0, 1, 10 NTU), four sample cells and a USB power charger. According to Rector, feedback so far has been positive.

“The results from the beta tests have been universally positive,” he says. “Ease of calibration, accuracy and adaptability to changing situations were all referenced as huge benefits in the responses we’ve received.” 800-344-3100;


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