CHEMetrics, Inc. announced two new applications for its proprietary DDPDTM Chlorine Test Kits.  Through work with the Food & Beverage and Water Treatment industries, CHEMetrics has fulfilled specific testing requirements for these two markets.

Food & Beverage processing facilities maintain chlorinated “dump tanks” in which food is immersed before processing.  This practice serves to disinfect the outer skin, which prolongs shelf-life.

Cooling Tower water treatment specialists inject chlorine into the cooling water system to prevent both microbial growth, and macrofouling (cooling system deposits formed by multi-celled organisms).

Both of these applications demand simple, accurate, and fast on-site testing of chlorine.  CHEMetrics DDPD reagent is derived from the well-known DPD chemistry.  DDPD reagent is less susceptible to low-level chromate interferences—an important feature to cooling tower technicians.  In addition, the DDPD chemistry lends itself to superior color matching during visual quantitation.

To perform a test, the user snaps off the tip of an ampoule below the surface of the sample.  When the tip is broken, the sample is automatically drawn into the ampoule, where it reacts with DDPD reagent and forms a blue-violet color.  Color intensity is directly proportional to the concentration of chlorine in the sample.  Testing can be performed in about one (1) minute, with detection limits as low as 20 parts-per-billion (ppb).  High range tests can measure chlorine up to 5000 parts-per-million (ppm).  Test kits are available for either visual or instrumental analysis, with results expressed as free or total chlorine (Cl₂).  CHEMetrics Chlorine DDPD Kits are specially formulated for stability, resistance to interferences, and safe disposal.

Ordering information

For more information, contact: 
CHEMetrics, Inc. 
Marketing Department 
1-800-356-3072
marketing@chemetrics
 

1-Minute Visual Test Simplifies Routine Analysis for Food & Beverage Processing  and Pulp & Paper Industries

This unique kit, designed with plant professionals in mind, greatly simplifies analytical procedures by using CHEMetrics' patented technology-the self-filling ampoule.  According to CHEMetrics, Inc.'s Vice President of Marketing and Technical, Henry B. Castañeda, "Development of this kit was influenced by plant professionals world wide.  They wanted a fast, accurate peracetic acid test kit, and we've provided it. " 

Each ampoule contains a unit dose of liquid reagent sealed under vacuum, which eliminates the need to measure and mix chemicals, simplifies testing, and practically eliminates reagent spoilage.  To perform a test, the sample is treated with an excess of potassium iodide-peracetic acid, if present, oxidizes the iodide to iodine.  The user then snaps off the tip of an ampoule below the surface of the sample.  When the tip is broken, the sample is automatically drawn into the ampoule, where the iodine then oxidizes DDPD, a methyl-substituted form of DPD (N,N-diethyl-p-phenylenediamine) to form a purple colored species that is directly proportional to the peracetic acid concentration in the sample.  Analytical test results are measured visually with a color comparator.  Testing range is 0-5 ppm with a detection limit of 0.05 ppm.  Total testing time is one minute. 

Peracetic Acid is used widely in the Food & Beverage Industry as a sanitizing agent.  It is used to disinfect equipment, pasteurizers, tanks, pipelines, evaporators, fillers, and contact surfaces in food processing plants, dairies, breweries, and wineries.  In many cases, peracetic acid is preferred over chlorine in beverage plants because it does not emit toxic byproducts or affect the taste of the beverage.  The Pulp & Paper Industry uses peracetic acid as a delignification and bleaching agent. 

Ordering information

For more information, contact: 
CHEMetrics, Inc. 
Marketing Department 
1-800-356-3072
marketing@chemetrics
 

   This unique test kit was developed due to the growing acceptance of chlorine dioxide throughout the water treatment industry.  According to the Drew Industrial Division of Ashland Chemical Company, "Chlorine dioxide is emerging as a capable alternative to chlorine.  Its increased use is being seen in many oxidative and disinfectant applications, which traditionally have been handled with chlorine." (Drew Principles of Industrial Water Treatment (1994). Drew Industrial Division, Ashland Chemical Company, Boonton, NJ.) 
   Each kit comes packaged in CHEMetrics' patented technology-the self-filling ampoule.   Each ampoule contains a unit dose of liquid reagent sealed under vacuum, which eliminates the need to measure and mix chemicals, simplifies testing, and practically eliminates reagent spoilage.  To perform a test, the user snaps off the tip of an ampoule below the surface of the sample.  When the tip is broken, the sample is automatically drawn into the ampoule, where the sample reacts with DPD  (N,N-diethyl-p-phenylenediamine) to form a pink product, directly proportional to the chlorine dioxide concentration in the sample.  Test results are measured visually  with a color comparator and have a dual range of 0-2 or 1-10 ppm (mg/L) chlorine dioxide.  Testing time is approximately one minute! 

Chlorine Dioxide Meter
   CHEMetrics offers a rugged field instrument for the determination of chlorine dioxide in water treatment facilities.  Unlike competitive meters, the Chlorine Dioxide Single-Analyte Meter (SAM) reads CHEMetrics' patented Vacu-vials(r) ampoules and offers the analyst an accurate, nearly instantaneous colorimetric test for Chlorine Dioxide. 
   The instrument uses an LED as a light source and features a long-lasting silicon photodetector.  Vacu-vials ampoules contain a unit dose of liquid reagent sealed under vacuum.  The user snaps off the tip of an ampoule below the surface of the sample.  This causes a correct volume of sample to be automatically drawn inside the ampoule, where it reacts with the reagent to form a pink color.  The user then inserts the ampoule into the SAM, and results are displayed in parts-per-million (ppm) chlorine dioxide.  Testing range is 0-10 ppm, with a Method Detection Limit (MDL) of 0.20 ppm.  The method uses the standard DPD chemistry, and the procedure takes just one minute from start to finish! 
   Chlorine Dioxide is becoming increasingly popular in waste treatment facilities because it is more selective than chlorine in what it reacts to, and it does not emit toxic byproducts.  The industrial cooling water treatment industry uses chlorine dioxide as an oxidizing microbicide, where it is preferred over chlorine because of its reduced impact on the environment. Chlorine Dioxide is also used as a disinfectant in both the municipal water treatment and the food & beverage industries, as it does not discharge foul tastes or odors.  It is used as a bleaching agent in the pulp & paper industry. 

Ordering informationTop

For more information, contact: 
CHEMetrics, Inc. 
Marketing Department 
1-800-356-3072
marketing@chemetrics

New Analytes

Aluminum Vacu-vials^® - - CHEMetrics' new Aluminum (ECR Method) Vacu-vials^® Test Kit, K-0603, offers a simple, inexpensive solution to your aluminum testing needs.  With our kit, a user can measure aluminum in wastewater, process water, drinking water, or any other aluminum application in the 0-0.25 ppm range with no mixing, no measuring, no mess.
More info.

Ammonia 3 Vacu-vials^® - - CHEMetrics' new Ammonia 3 Vacu-vials^® Test Kit, K-1403, employing the salicylate chemistry, offers the same sensitivity as our Nessler's line, but with  additional benefits -- no limited shelf-life and no hazardous waste generation.  
More info.
Also available as visual tests, Ammonia CHEMets Kits, K-1401 & K-1410.
More info.

Fluoride Vacu-vials^® - - CHEMetrics' new Fluoride Vacu-vials^® Test Kit, K-4003, based on the SPADNS chemistry, offers a fast, efficient and cost effective way to measure fluoride in the 0-2 ppm range.
More info.

Ozone 2 Vacu-vials^®  - - CHEMetrics' new Ozone 2 (Indigo Method) Vacu-vials^® Test Kit, K-7413, does not suffer from chlorine interference, and since the kit uses our patented self-filling ampoules, results are fast and accurate.
More info.

Sulfate Vacu-vials^®  - - CHEMetrics' new Sulfate (Barium Method) Vacu-vials^® Test Kit, K-9203, measures sulfate in many different sample types, including drinking water, natural water, food and beveage preparation, cooling and ion exchange waters and many others.
More info.