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  • ColorpHast Test Strips (Box of 100)
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ColorpHast Test Strips (Box of 100)

Available in multiple versions

43 customer reviews

Price: $15.01 - $89.59
Product Specifications
Brand Name Millipore
UNSPSC Code 41113034

These ColorpHast pH Test Strips allows you to take accurate pH readings in seconds. These non-ble... Read full product description



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0-14 pH B003TV3GTY
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Product Features

  • Special indicator dyes do not allow bleeding
  • Get quick and accurate results
  • Results in 3 to 5 seconds
  • Dye is covalently bound to the reagent paper
  • Can be used in weakly buffered/weakly colored solutions

Product Details

  • Shipping Information: View shipping rates and policies
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B00794A9QU
  • Average Customer Review: 4.2 out of 5 stars  See all reviews (43 customer reviews)
  • Product Warranty: For warranty information about this product, please click here

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Product Description

These ColorpHast pH Test Strips allows you to take accurate pH readings in seconds. These non-bleeding strips will not contaminate samples and can be used in the laboratory or remote sites. These test strips have a range and sensitivity of EMD Chemicals.

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

35 of 35 people found the following review helpful By Naina on July 22, 2010
Size: 0-14 pH Verified Purchase
I have tried a lot of ph strips, and was recommended these by a friend. I am very pleased with the results - they are much more accurate than other brands I've tried, with many different ranges to choose from too. Despite the price I will be getting these from now on.

Oh and note to others getting this - they sometimes put a massive label covering up a full side of the chart (which I thought was missing until I scraped off the packaging label to reveal the rest of the cart).
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11 of 11 people found the following review helpful By Jeremy D. Forkey on December 6, 2012
Size: 0-14 pH Verified Purchase
I contacted the company personally to tell me how to accurately use these test strips since it doesn't come with directions and what little was written on the package was a foreign language. Here's what they said.....

General Procedure for the use of colorpHast Test Strips: This procedure is also printed on the color
chart label.
1. Remove the strip from the box.
2. Immerse the reaction zone of the strip into the solution for approximately 3-5 seconds or
until there is no further color change.**
3. Remove the strip from the solution, wiping the strip along the edge of the vessel to
remove excess liquid from the strip.
4. Compare the reaction zones to the color chart on the box holding the strip to the top of
the box with the reaction zones to the bottom of the box.
5. Record the results of the closest matching color to the strip.
** For weakly buffered solutions, an extended period of time may be necessary. In these cases, immerse strip until there is
no further color change (1-10 minutes). Because the indicator is covalently bound to the colorpHast® strip, the test strip may
be immersed in the solution for longer periods of time if necessary.

I tested the strips using vinegar and definitely got an acidic reaction. I was getting concerned because pretty much every time I tested my dogs urine I was getting the same reading. So far I think they're accurate and they surely are easy to use!
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16 of 19 people found the following review helpful By OnwardUpward on September 4, 2010
Size: 0-14 pH Verified Purchase
The strips did not work. They gave the same reading regardless of the solution being an acid or base.
Granted the strips were 'slow' to give a reading but then all the readings were the same.
Now I purchased other strips which worked great. But I feel (after reading negative comments for various brands) that sometimes you do get a dud. Is it the company or do some batches not work? Im not sure. My suggestion is to get two different brands to see which is more accurate.
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6 of 6 people found the following review helpful By superme on July 17, 2012
Size: 0-14 pH Verified Purchase
I wasn't impressed with this product. There were no written directions, leaving me a bit confused as to how to use them, namely, how far to dip them into the solution, etc. The pictures on the box helped me figure it out, but I am still unsure as to whether I am using them correctly. My biggest complaint is that it is hard to tell exactly what the ph is because the color charts are not that unique between, say 3 and 4. You can definitely tell ph 1 from ph 3, but telling 1 from 2 or 3 from 4 is a bit more ambiguous. Also, there is no way to tell if the solution is 4.1 or 4.9. If you don't need too accurate of readings, these should be fine for you, although they're a bit expensive. Overall, though, not the best product, either go for a meter, or go for the cheap strips... in my opinion, these aren't accurate enough to justify the price.
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5 of 5 people found the following review helpful By LindaD on May 26, 2012
Size: 0-14 pH Verified Purchase
As an Esthetics Instructor, I was looking for inexpensive 0-14 pH testing strips to use in the classroom. At 12 cents a strip, this was a great deal. The value was even better when I began to use them. The pH of the products we use on our skin is very important. Sometimes we want to raise or lower the pH, but we also want to make sure we are following that with the proper product to then neutralize the skins pH. Using these strips makes for a great visual aid and makes teaching (for me, and understanding for them) so much more effective. I have used them on many products I already knew the pH of, and every time they have been accurate. The no-bleed factor is great too, as I feel comfortable dipping the strips right into my product. So far, this product hasn't let me down. I will definitely be sticking with this product when it's time to reorder.
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7 of 8 people found the following review helpful By dmast on June 4, 2012
Size: 0-14 pH Verified Purchase
This product gave the exact same color reading for water ranging from 7.2 to 9. No difference in colors whatsoever. Out of curiosity, I tried it in a 17% acid solution, and it did indeed give a reading of 1.0. The product may work well to give a sense of an extreme condition, but certainly did not correctly resolve ph in the center of the scale, where all pond owners are most curious.
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3 of 3 people found the following review helpful By Octavia on March 11, 2013
Size: 0-14 pH Verified Purchase
I am Black and I have recently went natural with my hair. I tested all rhe products that I use on my hair from the shampoos & conditioners to the creams, oils & gels (commercial and homemade). I found that these PH strips were very accurate. It read the PH levels consistently and there were variation in the different products. Since I am newly natural I am making sure the PH balance are correct because my hair is in a a newly fragile stage and these strips worked perfectly. Easy to use and read with the chart. I was able to differiate the products with the most acidity and save them for later in my hair journey when my hair is stronger. Since there were 100 strips I am sure I may have to repurchase again later this year to monitor any new and ongoing products for the future. Great product!
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