The company’s ISE CSA610 on-line fluoride analyser offers constant fluoride

monitoring for more precise management of drinking water. The instrument’s low-reagent

consumption, combined with its ability to calibrate automatically, enable it

to run unattended for up to 30 days.

The CA610 measures fluoride concentrations ever 4.2 minutes, 24 hours/day and

requires only 500ml of reagent over a 30-day period. Reagents and standards

are fully enclosed in a case that is rugged, compact and corrosion-resistant

– making it ideal for monitoring at remote locations.

USA turbidity innovations

Hach’s new AquaTrend firmware has been created specifically to enable US water

treatment plants comply with the EPA’s latest requirement for turbidity monitoring,

providing data logging every 15 minutes for a full 30 days – thus exactly meeting

the EPA specification which requires water plants to monitor filters individually.

Violations are based upon 2 consecutive readings at 15 minutes apart.

AquaTrend compresses and stores data automatically, thus eliminating the need

for an on-site data logger or computer and for those customers who already use

Hach firmware, upgrading to Version 4.0 is a simple procedure.

Ammonia accuracy

The company’s new APA 6000 Low Range Ammonia Analyser has a high-sensitivity

operating range – 0.02-2.00mg/L as N – and low reagent consumption for full-time

monitoring in drinking water and power plants.

The APA 6000 uses a modified Phenate method to colourmetrically monitor free

ammonia with laboratory accuracy – enabling water quality managers to control

pH levels in boiler water and monitor ammonia levels in drinking water influent.

Using Hach’s patented CSIA (Carrierless Sequential Injection Analysis), the

APA 6000 Analyser can handle fresh samples every five minutes, using less than

1L per reagent, per month. Data is

displayed in a numerical or graphical format, with the capability for

showing units in terms of N or NH3.

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