Chlorinated wash water at concentrations of 100–150 ppm of total chlorine or 2–7 ppm of free residual chlorine can help reduce microbial contamination in fresh fruits and vegetables. For it to be effective, water pH should be between 6.0 and 7.0. As a general rule it is important to monitor and control the pH, chlorine concentration, temperature, and contact time (not exceeding 5 minutes) to ensure food safety.
Indigo® pH 4.5-10 test strips are ideal for accurate measurement of weak acid or base pH in most foods & drinks as well as urine & saliva. Only $13.95/100 strips.
Indigo® pH 4.5-10 triple pad test strips are calibrated at ~pH 5.75. Changes can be subtle & appear different under fluorescent, incandescent or sunlight. So, tests done outdoors might appear a bit different when compared/repeated in a kitchen, lab, hatchery, roastery, etc.
I bought these to verify what the contractor said. I'm glad I did because they proved him correct. My tap water is close to 6.5pH, but the "5-gallon filtered bottled water" from the self-fill machine at the grocery store is between 6 and 5.5 pH. The grocery store water is slightly more acidic than the water from the sink/tap. The normal range is said to be 6 to 8.5. I'll have to research the meaning of these findings, perhaps try another store's water and see what I get. The purchase was well worth it!
— Patrick
2022-09-28
Surprised by the new packaging, but think it will be better than the old. Delivery as always was quick, we will continue to purchase these test strips.
— Linnea
— Indigo:
Thanks for your review and continued support. The packaging was changed by the manufacturer at end of 2021 to allow increased protection, quicker dispensing of strips and allow the new label layout to be utilized.
2021-12-12
These test strips are extremely accurate and I will only purchase the test strips from here! Thank you
Excellent product. The strips are packaged well and easy to use. The triple pads make it quite easy to read very accurately. The order was very well packaged and delivered quickly.
I have been using Indigo Instruments test strips around 10 years now. Before I found them I think I have tested maybe 15-20 different test equipment and have found that Indigo test strips are way superior to any and all the other test strips I have tried. Usually fast delivery I am in California and I have them 3-4 days in the mailbox.
— Swede
2017-12-02
Better sensitivity (0.5 units) than typical pH paper. Provides accurate results without the need for electronic pH tools in difficult environments for electronics. And NO calibration needed.
— Doug
2017-08-10
I discovered this company accidentally many years ago when I was seriously ill with no diagnosis. I used the pH strips to double check the medicinal test strips I had bought in order to diagnose myself. At first I bought only a bag of test strips; now they all come in a plastic box. The quality is very good; the tests are reliable; the strips last for over a year. The company ships immediately, and the product arrives to Norway in just a few days. I once sent an enquiry about the pH in drinking water (low due to acid rain), and I had an email discussion with a professional who works with the company. All in all, I consider Indigo a serious and professional website, and the pH tests of high quality.
— Efficiency and reliability at affordable costs
2017-06-01
This PH scale is extraordinary. Very precise.
Indigo's customer service is excellent. Very accommodating, attentive and prompt in their advice. Always a pleasure to order Indigo Instruments.
Thanks for your review and continued support. The packaging was changed by the manufacturer at end of 2021 to allow increased protection, quicker dispensing of strips and allow the new label layout to be utilized.