Category: sodium hypochlorite generator

NSF/ANSI/CAN 61 – 2018 Certified Chlorine Generators

Perfect for Potable Water and Health Care Use

Posted on by Paul

NSF/ANSI 61 & 372 Mark Truesdail US and Canada

Who certified the generators?

Truesdail Laboratories Inc. (now part of ALS Global) has certified the generators.

View our certification here.

Which models are certified?

The following Electricide® electrochemical chlorine generators models to NSF/ANSI/CAN 61 & 372:

  • HGB-2.5  Capacity: 47 g/hr = 2.5 lb/day
  • HG-10  Capacity: 189 g/hr = 10 lb/day
  • HG-25  Capacity: 472 g/hr = 25 lb/day
  • HG-50  Capacity: 945 g/hr = 50 lb/day
  • HG-100  Capacity: 1,890 g/hr = 100 lb/day
  • HG-200  Capacity: 3,780 g/hr = 200 lb/day
  • HG-300  Capacity: 5,670 g/hr = 300 lb/day
  • HG-400  Capacity: 7,560 g/hr = 400 lb/day
  • HG-500  Capacity: 9,450 g/hr = 500 lb/day
  • HG-600  Capacity: 11,340 g/hr = 600 lb/day
  • HG-700  Capacity: 13,230 g/hr = 700 lb/day
  • HG-800  Capacity: 15,120 g/hr = 800 lb/day
  • HG-900  Capacity: 17,010 g/hr = 900 lb/day
  • HG-1000  Capacity: 18,900 g/hr = 1,000 lb/day

Which applications require certification?

Applications related to municipal potable water and health care water treatment (hot and cold water systems in hospitals and aged care facilities) require NSF/ANSI/CAN 61 & 372 certification for chemical generators. Dioxide Pacific has obtained this certification to ensure the above-mentioned generators can be installed and operated in these applications.

What is NSF/ANSI/CAN 61 & 372?

The aim of NSF/ANSI/CAN 61 is to ensure that the generator does not add any undesired health related compounds to the water via the chemical it generates. NSF/ANSI/CAN 372 ensures that no lead is added to the generated hypochlorite solution.

Note: NSF/ANSI/CAN 61 addresses health effects only and does not address the disinfection efficacy of the product

Why is it important?

Many States in the US require NSF/ANSI/CAN 61 & 372 certification for chlorine generators. Even if it is not peremptory, this certification is reciprocal in other countries as recognition of high chemical generation purity and therefore lowest risk for potable water and water for use as an ingredient in food products or for washing.

How do the generators work?

The Electricide® electrochemical chlorine generators produce either chlorine gas or 2-30 g/L sodium hypochlorite solution which can be dosed and controlled to 3 dosing points. The generator PLC/HMI  automatically measures chlorine residual and controls dosing of chlorine gas or sodium hypochlorite solution to ensure accurate disinfection. Generators are equipped with secure remote access capability to view, operate and receive email alarm notification.

Contact us for further information and pricing.

Generate Hypochlorite from Salt – Safe and Clean in Food Environment

Safety concerns with using 12.5% sodium hypochlorite

Posted on by Paul

Safety is always a concern to plant managers

Recently, we received an inquiry from a customer indirectly servicing the food industry. Their water is used for washing and must be clean and disinfected. They were looking for a disinfection method that would minimize their safety risk on site. Filtration+UV was chosen as the primary method although they realized it would not be sufficient on it’s own as the reticulation pipework would require a chemical residual of either chlorine (hypochlorite) to prevent biofilm growth.

Chlorine Considerations

This is how the customer perceived the various alternatives:

What is the Electricide® HGB Hypochlorite Generator?

The Electricide® HGB chlorine generator is an electrochemical system for converting sodium chloride (salt) into chlorine. Electricide-B1 is a purified brine precursor that is fed into the HGB generator at the anode side of the electrolytic cell where chloride ion is oxidised to chlorine. Chlorine combines with the hydroxide formed at the cathode to make sodium hypochlorite solution at 5-25 g/L (as NaOCl). The generator is skid mount and easy to install on site. Electricide-B1 chemical is available ex stock from Dioxide Pacific.

Chlorine Generation Reactions:

① Anode (oxidation): 2Cl– → Cl2 + 2e–

② Cathode (reduction): 2H2O + 2e– → H2 + 2OH–

① + ② (combined) 2Cl– + 2H2O → Cl2 + H2 + 2OH–

Chlorine reacts with caustic catholyte to form sodium hypochlorite and salt.

Cl2 + 2NaOH → NaCl + NaOCl

What is good about it?

  • Safety. Only one precursor chemical is required – Electricide-B1 and this is non-hazardous. The hypochlorite solution produced is 5-25 g/L at pH 9 – 9.5. This compares with commercial bleach at 12.5% (125 g/L) at pH 12. The lower concentration hypochlorite is much safer to handle and store.
  • Stability. The lower concentration hypochlorite produced by the HGB generator is 25 times more stable in storage than commercial bleach. Longer life means lower cost.
  • Purity. The hypochlorite solution produced by the HGB generator is extremely low in chlorate, sodium and chloride. This can be important for food production where low chlorate and perchlorate in the food product are important.
  • Simplicity. The generator is simple to operate, install and maintain.
  • Remote access. Web server access using any browser is standard with email alarms.
  • Reliability. The generator membrane cell is guaranteed when Electricide-B1 is used as the precursor.

Interested?

The Electricide® HGB generators are available for purchase or rental. Rental can include maintenance.

Electricide-B1 chemical is available in IBC’s (totes), 200L (55 gal) or 15L (5 gal) drums.

Dioxide Pacific can install and commission the system if desired. Installation is a simple process for mechanical and electrical technicians.

Download the Brochure pdf-icon-aa-30x30

Contact us for more information or a quotation.