How do you clean your refractometer lens? - Page 2

jkopp36 · 01/06/2010, 10:33 AM

Quote:

Originally Posted by pudelt32

Calibrating with RO or RO/DI water will not give you accurate results. I found out the hard way as I was practicing this method and over time my salinity kept creeping up b/c I was using RO/DI water to calibrate but it does not completely solve the issue. I picked up some calibration solution at my local fish store and re-calibrate every 2 weeks to ensure that i'm getting an accurate reading. I've had no problems since.

I agree with this for the most part. My cheap refracto will read around 0.003 after being calibrated with 35ppt solution however my nice Vee Gee unit is dead on 0.000 after calibration and has yet to need calibration since then (checked often with both 35ppt and RO/DI). Very nice unit and much easier to read (for me at least) too.

johnc43113 · 01/06/2010, 11:48 AM

I need to calibrate mine...

I use my shirt.

MrsHaggis · 01/06/2010, 12:23 PM

I also use my t-shirt.

01/06/2010, 12:23 PM	#28
MrsHaggis Registered Member Join Date: Dec 2008 Location: St Louis, France Posts: 675	I also use my t-shirt. __________________ Nothing scarier than a clown!! ----------------------------- 1 ClownFish 1 SixLine Wrasse 1 Foxface Rabbitfish Mushrooms Long Polyp Leather Green Anchor Coral Zoanthids Trumpet Coral Goniopora Current Tank Info: 360 litre (95 US Gallons), Tunze DOC Skimmer 9010, Lights: Metal Halide 250 Watt and 2x24 Watt Moon Lights, Tunze MultiController 7095

01/06/2010, 11:48 AM	#27
johnc43113 Registered Member Join Date: Sep 2009 Location: Circleville, OH Posts: 109	I need to calibrate mine... I use my shirt.