SKU: 69132880953

Hanna HI758 Calcium Colorimeter Marine Checker

Sale price$1471.05 Regular price$1634.50
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Ships within 48 hours · Estimated delivery Aug 11 - Aug 16

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Description

Hanna HI758 Calcium Colorimeter Marine CheckerHanna HI758 Calcium Colorimeter Marine Checker Hanna HI758 Calcium Colorimeter Marine Checker is used to accurately check the calcium level in reef tanks. Accurately check your reef tank's calcium level with the Hanna HI758 Calcium Checker. Three simple steps to results. The Hanna Calcium Checker bridges the gap between simple chemical test kits and professional instrumentation. Accurate, affordable, and easy to use. First, zero the instrument with

Hanna HI758 Calcium Colorimeter Marine Checker

Hanna HI758 Calcium Colorimeter Marine Checker is used to accurately check the calcium level in reef tanks.

Accurately check your reef tank's calcium level with the Hanna HI758 Calcium Checker.

Three simple steps to results. The Hanna Calcium Checker bridges the gap between simple chemical test kits and professional instrumentation. Accurate, affordable, and easy to use. First, zero the instrument with your water sample. Next, add the reagent. Last, place the vial into the Hanna Calcium Checker, press the button, and read the results. Done.

Easier to use and more accurate than chemical test kits.

Tips for accurate results:

  • Use Hanna HI70436 Deionized Water
  • Make sure testing vials are clean of any debris
  • Vials must be dry on the outside with no fingerprints
  • Violent shaking will cause microbubbles that can affect the reading
  • Do not let the sample sit too long before taking a reading

New MiniPipette - The new mini pipette has a 2-stage plunger that will let you accurately dispense your 0.1mL tank water sample. The pipette is spring-loaded and will allow you to retrieve and dispense 100 µL. Just attach the pipette tip, and press the button down until it stops the first time. Then place the tip into your tank water sample and slowly let the plunger spring back up. Move the pipette to your testing vial, and press the plunger down to the first stop to dispense the liquid it took in. 

Dedicated to a single parameter - Designed to work with HANNA's liquid reagents. Uses 10 mL glass cuvettes.

Range: 200 to 600 ppm
Resolution: 1 ppm (mg/L)
Precision: ±6% of reading
Light Source: LED @ 610 nm
Light Detector: Silicon photocell
Environment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Battery Type: (1) 1.5V AAA
Auto-off: After 10 minutes of non-use and after read
Dimensions: 81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5")
Weight: 64 g (2.25 oz.)
Method: Adaptation of the zincon method
 
Weighing a mere 65 g (2.3 oz.), the Checker®HC easily fits into the palm of your hand or pocket. Use for quick and accurate on-the-spot analysis. Single button operation: Zero and Measure Operated by a single AAA battery.

Replacement Reagents - HI758-26 Calcium Checker Reagents

Terms of Sale: Please take the time to thoroughly understand and familiarize yourself with this test kit before purchasing, as the unique nature of this product means that we are unable to accept returns.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 69132880953

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4.2 ★★★★★
Based on 16 reviews
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Vonda Kioultzopoulos
Alexandria, US
★★★★★ 3
Effective but may be uncomfortable
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I have eczema on my feet and use a prescription cream that I leave on overnight. I often have a problem sleeping in socks but the silicone feels cool on my feet. The only drawback I have is the opening of the socks feel very tight around my ankles making them uncomfortable on me. I wish the opening was a bit more flexible.
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Reviewed in the United States on September 20, 2025
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Verified Purchase
Tessy
Charlottesville, US
★★★★★ 1
Burned my already sensitive feet, too big
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
Feels icky, and the heat gets trapped and literally felt like my feet were being burned by these. The bottoms of these feel prickly and they are way too big. You have to sit still and cannot walk in them.
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Reviewed in the United States on April 22, 2026
M
Verified Purchase
Ms. Mac
Alexandria, US
★★★★★ 5
Just as good as paraffin wax
Color: Pink & Beige, Size: Medium/Large(fits size 8 to 11)
I might prefer these socks over paraffin wax. They are comfy and very moisturizing. I use these socks once a week to keep the heels and soles of my feet moisturized between pedicures. I rinse with warm, soapy water then hang to dry. They are hard to walk in, but there's a saying printed in the socks that's says something to the effect of "take a break, stay off your feet" lol I love that as a reminder to put my feet up and relax
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Reviewed in the United States on April 9, 2026
S
Verified Purchase
SKI
Natrona Heights, US
★★★★★ 5
Love these!
Color: Pink & Beige, Size: Small(fits up to size 7)
Love these! As I write this review, I’m sitting in my recliner with these on. I have had other silicone socks in the past and would like to share a few of the things that I have learned. These fit great! The others were 2-3 sizes too big because you could not order a size. I wear a size 7 women’s shoe. I got the smaller size. I walked around my apartment in my old ones and they got kinda yucky. Now, I sit in my recliner, put them on and chill for a few hours. I now take them off and put in a ziplock bag so they stay nice and clean (no cat hair!). I use them once a week usually on Saturday or Sunday as I’m a working girl. Also, I use Auqaphor before I put them on and put cotton socks on after I’m finished. Your feet will be SO soft. This is not a one and done…I do this every week especially during sandal season! I know this was lengthy and I hope you got some tips.
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Reviewed in the United States on April 25, 2026
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Verified Purchase
Laura Smith
Whiting, US
★★★★★ 5
Super fun, easy to use, and beautiful!
Color: Sparkling Pink
Love it! I can’t stop thinking of excuses to wear it just in my day-to-day life because I love how it looks so much. I put it on my cheekbones, nose, and collarbones, and I also put it on over my eyes like an eyeshadow and it worked really well for that too. It’s super easy to use and intuitive, you just roll it on. It didn’t bother my skin either, which some glitters do because I have sensitive skin. Comes off easily with water and a washcloth, although some of it hangs around and you have to take it off with makeup remover, but that’s no problem for me honestly. It does rub off a bit, so be prepared for whatever you wear with it to get a little glittery. Great product, recommend!
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Reviewed in the United States on May 7, 2026

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