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Captive Purity Refractometer (standard)
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Captive Purity Refractometer (standard)

Temporarily Out of Stock: ETA 2-3 business days

Item #: CP2111

MSRP: $82.95 Save: $22.96 (28%)
$59.99
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Quick Overview

The Captive Purity Refractometer is an incredibly accurate and easy to use device that eliminates the confusion associated with inexpensive hydrometers. Just place a couple of drops of water on the prism and hold to the light. Rea...
Product Description
Reviews

Captive Purity Refractometer (standard) Information



Part #: RHS-10ATC

The Captive Purity Refractometer is an incredibly accurate and easy to use device that eliminates the confusion associated with inexpensive hydrometers. Just place a couple of drops of water on the prism and hold to the light. Reads in percent and specific gravity. An absolute must for the serious marine hobbyist.

The Captive Purity Refractometer is an optical device (no batteries) dual scaled 0-100% specific gravity: 1.0 to 1.070. Calibrate with distilled water. Adjustable eyepiece, carrying case, pipette and calibration screw driver included. This model is ATC (automatic temperature compensating)

Warranty

12 Month manufacturer warranty.
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Captive Purity Refractometer (standard) Reviews

Average Reviews

Customer Reviews

works good Product Review by SCOTT LUCAS (Posted on 2/26/14)
Rating
Excellent!

Comments: Easy to use, easy to see, and finally, one that really tells me what I need to know that is dependable time after time.

Great Product! Product Review by DOELL MESEY (Posted on 2/26/14)
Rating
Excellent!

Comments: Great product, easy to use and operate. I bought this because I have a 5 gallon nano aquarium(and a 75 gallon)and checking the salinity with a traditional swing arm Hydrometer was a ROYAL PAIN! Plus I didn't really trust the readings I was getting in the Hydrometer because you never know if you have all of the bubbles out. I love having the lighted version of this refractometer. I use reading glasses so I would imagine that if I had gotten the one without the light it would have been much harder to read. That being said, it is still a little difficult to count the exact lines (for salinity) but I can easily get a good idea of my salinity within a couple of seconds. My only bit of advice is before each use, wipe the glass and the cover with a lint-free cloth and after each use, wipe the glass and the cover with a paper towel first and then with a soft lint free cloth after. If there is any residue on the glass or the cover the reading will be off, even with RO or Distilled water.So don't keep recalibrating it, just make sure the surface is clean and lint free. All-in-all, this product works great and has saved me many headaches!

Awesome Refractometer Product Review by Mark (Posted on 2/26/14)
Rating
Excellent!

Comments: I have used a variety of different refractometers. This is the only one that I can honestly say there is no guessing when it comes to reading the scale. Save your money, don't buy the cheap ones.

Captive Purity Refractometer Product Review by MORGAN GONIA (Posted on 2/26/14)
Rating
Excellent!

Comments: I like how easy it is to calibrate this refractometer without a screwdriver. The gauge is easy to read and it being an A.T.C model is very helpful.

Simplistic Product Review by KAJ (Posted on 2/26/14)
Rating
Excellent!

Comments: I was using the coralife deepsix, and I thought I was at 35PPT, but after going to a LFS, they told me I was at 45PPT. The accuracy, ease of use, makes this an item that all reefers should have.

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