100, 400, 1500, 10000ppm: organic farms, restaurants, foot baths. Accurate results in <10 seconds; why wait a minute?
Quaternary ammonium compounds are the most chemically complex sanitizers. Their name derives from the central nitrogen that is bound to four organic groups. Quats bind with microbial cell walls and interfere with their metabolism. They are also shown to be effective against lice eggs and other invertebrates when used in higher concentrations.
Quaternary ammonium compounds are permanently charged cations with four aryl or alkyl side groups; the latter being especially long. They are effective against bacteria, amoebas, fungi, enveloped viruses & invertebrate larvae because they disrupt cell membranes at levels as low at 200ppm from 25-100oC.
Quats have their advantages & disadvantages:
Quaternary ammonium chloride solutions come in many varieties. Ours are calibrated for Oasis 146 but can be considered multi quat sanitizer test strips since results for other formulations such as the ones below will still be accurate. Treat all Quat solutions as 100% and use our Dilution Equation Calculator to dilute accordingly.
Note: All test strips Made in USA & are Q/A'd against NIST standards.
Temperature vs ppm results for Hyamine 1622 (Fluka) warmed up from 35 to 60oC (95-140F).
|T (oC)||QAC strips readings at: 0; 50; 100; 200; 400 ppm|
|35||Readings ok for 0-400ppm|
|40||Readings ok for 0-400ppm|
|45||0, 50, 100 ppm readings ok; 200 & 400 ppm read~ 1/2 color square higher|
|50||50, 100 ppm read~ 1/2 color square higher; 200, 400 ppm read 1 color square higher|
|55||Readings 1 color square higher across whole range|
|60||Readings 1 color square higher across whole range|
I need to create a Standard Operating Procedure on how to use and interpret the use of the High level QAC test strips. I found the one page document on the product description and operating principles I wanted to know if you had any training videos or additional documents on describing what is the desirable ppm range the foot bath should be in, on understanding how to read the strips and what to do if the strips are not within the desirable range. My operator is VERY new and I need to explain every detail.
1. If you don't have guidelines set by a local health authority or an industry standard, then go with the highest level, 1500ppm. However, some have even gone with higher levels and use the 10,000ppm strip.
2. The instructions on the strip pack are straightforward. Dip the strip into the solution & IMMEDIATELY compare to the color chart. If you wait 30 seconds, as required by other brands, you will get a false high reading.
3. Do not use hot water. Water warmer than 40C/105F may give false high readings.
4. The simple answer for not in the desirable range is to add more Quat concentrate if the reading is low. Add more water if the reading is high. Then retest. Don't worry about being exact, you can be +/- 10% without major consequences.
If you run into repeated problems with getting the right concentration, try our Dilution Equation Calculator.
Follow the directions on the label. All our quat strips are "quick response". In other words, dip the strip & compare to the color chart immediately. If you wait, the color will develop further & give a false high reading.