must have! By Darrell on 2/5/2012
Darrell would recommend this product to a friend
ok folks, add this to the "must have" list of your tank maintainence and testing supplies! I have always calibrated to 0ppt using ro/di. after getting this calibration fluid I discovered by refractometer was off by 2.5! so, i was actually mixing my salt to 1.023 1/2 instead of 1.026.
Worth it! By Justin on 2/1/2012
Justin would recommend this product to a friend
I was using RO/DI water to calibrate and I am glad I switched to this! My refractometer was off by quite a bit! The built in dropper is nice as well!
just what I needed! By Dan "Deva" on 1/23/2012
Dan "Deva" would recommend this product to a friend
was going to make some DIY calibration fluid but felt ALOT safer getting this . even if you are going to do some DIY fluid is it a good idea to double check it with this.
product is very easy to use glad I got it.
A+ By ak on 12/14/2011
ak would recommend this product to a friend
Great product, I found that my readings were way off until I started using this product. ThankYou BRS!
Salinity fluid checker By Ryan on 11/15/2011
Ryan would recommend this product to a friend
My salinity was off by about 1ppm. This came in handy.
Great product By James on 9/20/2011
James would recommend this product to a friend
This is a great product. You sould always calibrate to 35ppm. Never calibrate with tap water or even ro/di.
Easy! By Lx on 9/7/2011
Lx would recommend this product to a friend
What a great product.
No need to run around looking for a pipette which could anyway be covered in salt creep :)
Just drop it on and calibrate. So easy you will find yourself calibrating before every water change :)
A must have By Reef Junkie on 6/27/2011
Reef Junkie would recommend this product to a friend
Anyone who owns a refractometer should buy this product. Having a fixed salinity to calibrate your equipment to is a no brainer. Stop relying on RO/DI water to calibrate your refractometer, you could be off and not even know it. I feel more comfortable now knowing that my equipment is correctly calibrated.
Required for accurate refractometer use By Todd on 5/4/2011
Todd would recommend this product to a friend
I tried using distilled (RO/DI) water, and was getting terribly inaccurate results. I didn't know that you actually can't get a good reading after calibrating with distilled water. After buying this calibration fluid, my readings are spot on, every time. This is a great product. Highly recommended.
must have item! By Rosstin on 2/2/2011
Rosstin would recommend this product to a friend
Although they say you can calibrate a refractometer with distilled water, I would rather trust something that I know exactly what the SG is. This is something I would never go without. Must have to ensure proper calibration of your refractometer
Great By Clayton on 12/7/2010
Clayton would recommend this product to a friend
Easy to use and get perfect readings for your gravity
Definitely a must buy By Grant on 12/3/2010
Grant would recommend this product to a friend
If you have a refractometer, this is a must like the other review states. Quick and easy calibration to 35 ppt. Doesn't drip and isn't messy at all. I use to calibrate with RO water to 0 ppt and after using this I realized I was still slightly off. It makes a difference being able to calibrate against something close to natural salt water.