We have been using a digital unit for a few years - Sper Scientific 300055 Pocket Digital Refractometer - expensive ($300+), but it appears to be very accurate..... has built-in temperature compensation.
John McNicholas NABCEP Certified Solar PV Installer ™ Key Power Services, Inc. Begin forwarded message: From: "Rob Shappell" <r...@nwes.com> Date: May 9, 2011 10:56:12 AM EDT To: "'RE-wrenches'" <re-wrenches@lists.re-wrenches.org> Subject: Re: [RE-wrenches] Hydrometer source Reply-To: RE-wrenches <re-wrenches@lists.re-wrenches.org> Hi Dave, We use and recommend NAPA 700-1145. $12.00 I am starting to look at digital Refractometers. Any recommendations? Rob Shappell From: re-wrenches-boun...@lists.re-wrenches.org [mailto:re-wrenches-boun...@lists.re-wrenches.org] On Behalf Of Dave Palumbo Sent: Monday, May 09, 2011 8:18 AM To: 'RE-wrenches' Subject: Re: [RE-wrenches] Hydrometer source We used to buy temperature compensated hydrometers from AEE to include with the sale of a battery bank for off grid customers. My sales person says AEE is no longer carrying that item. I believe they were made by Dekka. Recommendations for a new source for battery hydrometers in the $8 to $ 15 range? David Palumbo Independent Power LLC 462 Solar Way Drive Hyde Park, VT 05655 www.independentpowerllc.com NABCEP Certified PV Installer Vermont Solar Partner 23 Years Experience, (802) 888-7194 _______________________________________________ List sponsored by Home Power magazine List Address: RE-wrenches@lists.re-wrenches.org Options & settings: http://lists.re-wrenches.org/options.cgi/re-wrenches-re-wrenches.org List-Archive: http://lists.re-wrenches.org/pipermail/re-wrenches-re-wrenches.org List rules & etiquette: www.re-wrenches.org/etiquette.htm Check out participant bios: www.members.re-wrenches.org
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