--- product_id: 44283729 title: "HF Scientific 9941 Total Chlorine Micro Check Test Strips, 0-1 and 1-10 ppm Range" brand: "hf scientific" price: "€ 63.52" currency: EUR in_stock: true reviews_count: 2 category: "Hf Scientific" url: https://www.desertcart.pt/products/44283729-hf-scientific-9941-total-chlorine-micro-check-test-strips-0 store_origin: PT region: Portugal --- # HF Scientific 9941 Total Chlorine Micro Check Test Strips, 0-1 and 1-10 ppm Range **Brand:** hf scientific **Price:** € 63.52 **Availability:** ✅ In Stock ## Quick Answers - **What is this?** HF Scientific 9941 Total Chlorine Micro Check Test Strips, 0-1 and 1-10 ppm Range by hf scientific - **How much does it cost?** € 63.52 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/44283729-hf-scientific-9941-total-chlorine-micro-check-test-strips-0) ## Best For - hf scientific enthusiasts ## Why This Product - Trusted hf scientific brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Test strips for field testing and quality-control procedures; provide a safe and economical alternative to reagent chlorine testing. Includes 50 test strips are supplied in bottle labeled with instructions, color-comparison scale, and expiration date. Review: Product is as advertised, good price range, and delivered quickly. - Product is as advertised, good price range, and delivered quickly. Review: They aren't usable ... - Instructions say to use the aperture to get color match; but the fabric pad that contains the reagent covers the aperture. Plus, the color of the pad and the colors on the bottle don't seem to match very well under 2700k light. If you place the aperture over the bottle - they really don't match. Poorly enough that I was unable to determine a match on two strips. The strip has only ONE reagent pad. It is used for both 1ppm and 10ppm testing. The difference is how long you immerse the pad in water. 5 seconds for 10ppm, 10 seconds for 1ppm. Then you wait 30 seconds as the reagent develops, you have 15 seconds to do the color match -- all while the color is changing fairly rapidly. And under 2700k light, nothing matches. Also, the reagent pads change color as you watch them develop, that's expected, but they never stop changing color. You have only a few seconds to "read" a result, and if you miss the time window you wasted a strip. And the difference in color during the 15 second match window is like chasing rainbows. The really lousy part of the 'design' is that if you must match colors with the fabric over the reference colors, then you can't use match strips holding the test strip beside the line of colors - everything is too light. And if you touch the bottle with the strip then the strip wets the bottle and you have only a part of the small aperture one color, with a ring of different color around it, and a third color outside that where there is no aperture. Just tried again under daylight conditions. Same. Can't find a color match - or anything that is closer than somewhere between less than nothing to midway up the chart. Unusable for me. Returning the remaining strips since they appear defective to me. It looks to me like they use very subtle hues to differentiate readings. Anyone with any color vision deficiency should avoid. Even then, the swings in color during the reading period makes them unusable for most. ## Features - Package weight :0.090 kg - Package height :5.842 cm - Package length :9.652 cm - Package width :6.096 cm ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00N5IIZ1K | | Best Sellers Rank | #481,646 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #559 in pH Test Strips | | Brand Name | HF Scientific | | Customer Reviews | 4.0 4.0 out of 5 stars (5) | | Item Weight | 0.01 Ounces | | Manufacturer | HF Scientific | | Material Type | Plastic | | Recommended Uses For Product | Chlorine Test | | Unit Count | 50.0 Count | ## Product Details - **Brand:** HF Scientific - **Manufacturer:** HF Scientific - **Material:** Plastic - **Recommended Uses For Product:** Chlorine Test - **Unit Count:** 50.0 Count ## Images ![HF Scientific 9941 Total Chlorine Micro Check Test Strips, 0-1 and 1-10 ppm Range - Image 1](https://m.media-amazon.com/images/I/61PYl7v6ffL.jpg) ![HF Scientific 9941 Total Chlorine Micro Check Test Strips, 0-1 and 1-10 ppm Range - Image 2](https://m.media-amazon.com/images/I/21v9qSH-sSL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Product is as advertised, good price range, and delivered quickly. *by J***A on September 4, 2017* Product is as advertised, good price range, and delivered quickly. ### ⭐⭐ They aren't usable ... *by C***0 on June 10, 2018* Instructions say to use the aperture to get color match; but the fabric pad that contains the reagent covers the aperture. Plus, the color of the pad and the colors on the bottle don't seem to match very well under 2700k light. If you place the aperture over the bottle - they really don't match. Poorly enough that I was unable to determine a match on two strips. The strip has only ONE reagent pad. It is used for both 1ppm and 10ppm testing. The difference is how long you immerse the pad in water. 5 seconds for 10ppm, 10 seconds for 1ppm. Then you wait 30 seconds as the reagent develops, you have 15 seconds to do the color match -- all while the color is changing fairly rapidly. And under 2700k light, nothing matches. Also, the reagent pads change color as you watch them develop, that's expected, but they never stop changing color. You have only a few seconds to "read" a result, and if you miss the time window you wasted a strip. And the difference in color during the 15 second match window is like chasing rainbows. The really lousy part of the 'design' is that if you must match colors with the fabric over the reference colors, then you can't use match strips holding the test strip beside the line of colors - everything is too light. And if you touch the bottle with the strip then the strip wets the bottle and you have only a part of the small aperture one color, with a ring of different color around it, and a third color outside that where there is no aperture. Just tried again under daylight conditions. Same. Can't find a color match - or anything that is closer than somewhere between less than nothing to midway up the chart. Unusable for me. Returning the remaining strips since they appear defective to me. It looks to me like they use very subtle hues to differentiate readings. Anyone with any color vision deficiency should avoid. Even then, the swings in color during the reading period makes them unusable for most. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/44283729-hf-scientific-9941-total-chlorine-micro-check-test-strips-0](https://www.desertcart.pt/products/44283729-hf-scientific-9941-total-chlorine-micro-check-test-strips-0) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-24*