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  • Robinair 75240 Coolant and Battery Refractometer

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    From $54.12 (New)
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Buy from Amazon $59.63$36.54 $55.00 $50.00 $45.00 $40.00 Dec Mar Jun Sep Dec Mar Jun Sep Dec Mar Jun 2014 2015 2016 $45.28, Sep 10 4:51 am$46.24, Nov 8 1:18 am$43.20, Nov 23 1:22 am$42.53, Nov 25 6:47 am$41.94, Nov 27 3:54 am$41.64, Dec 1 1:30 am$43.69, Dec 2 - Jan 8$41.64, Dec 1 1:30 am$43.69, Dec 2 - Jan 8$41.65, Dec 11 10:16 pm$43.69, Dec 2 - Jan 8$42.02, Dec 14 8:16 am$43.69, Dec 2 - Jan 8$41.75, Dec 16 7:56 am$44.85, Dec 23 8:51 am$43.69, Dec 2 - Jan 8$43.69, Dec 2 - Jan 8$42.58, Dec 26 4:17 am$43.69, Dec 2 - Jan 8$42.78, Jan 9 - Jan 14$43.69, Dec 2 - Jan 8$43.09, Jan 15 - Jan 28$44.23, Jan 29 - Feb 5$43.69, Dec 2 - Jan 8$44.69, Feb 6 - Feb 7$43.69, Dec 2 - Jan 8$43.69, Dec 2 - Jan 8$43.02, Feb 8 - Feb 9$44.24, Feb 12 1:52 am$43.69, Dec 2 - Jan 8$43.86, Feb 14 6:06 am$43.69, Dec 2 - Jan 8$43.87, Feb 15 - Feb 17$43.69, Dec 2 - Jan 8$44.40, Feb 17 - Feb 21$43.69, Dec 2 - Jan 8$45.45, Feb 21 - Feb 26$43.69, Dec 2 - Jan 8$45.53, Feb 26 11:37 pm$43.69, Dec 2 - Jan 8$45.27, Feb 27 - Mar 2$43.69, Dec 2 - Jan 8$45.24, Mar 2 - Mar 3$43.69, Dec 2 - Jan 8$45.29, Mar 4 - Mar 6$43.69, Dec 2 - Jan 8$44.87, Mar 7 - Mar 9$43.69, Dec 2 - Jan 8$45.33, Mar 11 - Mar 14$43.69, Dec 2 - Jan 8$44.42, Mar 15 - Mar 16$43.69, Dec 2 - Jan 8$44.43, Mar 17 - Mar 18$43.69, Dec 2 - Jan 8$44.93, Mar 19 - Mar 20$43.69, Dec 2 - Jan 8$44.26, Mar 22 - Mar 23$43.69, Dec 2 - Jan 8$45.01, Mar 24 - Mar 25$43.69, Dec 2 - Jan 8$45.04, Mar 26 - Mar 27$43.69, Dec 2 - Jan 8$44.78, Mar 30 - Apr 2$43.69, Dec 2 - Jan 8$44.90, Apr 3 - Apr 5$43.69, Dec 2 - Jan 8$44.71, Apr 6 - Apr 7$43.69, Dec 2 - Jan 8$44.99, Apr 8 - Apr 10$43.69, Dec 2 - Jan 8$44.38, Apr 11 - Apr 12$43.69, Dec 2 - Jan 8$44.31, Apr 14 4:45 am$43.69, Dec 2 - Jan 8$44.62, Apr 17 - Apr 19$43.69, Dec 2 - Jan 8$44.47, Apr 19 - Apr 23$43.69, Dec 2 - Jan 8$44.49, Apr 24 - Apr 25$43.69, Dec 2 - Jan 8$43.69, Dec 2 - Jan 8$43.54, Apr 26 1:05 pm$43.69, Dec 2 - Jan 8$42.86, Apr 28 - Apr 29$43.69, Dec 2 - Jan 8$42.90, Apr 30 - May 1$43.30, May 3 - May 4$43.28, May 3 11:07 am$43.51, May 5 - May 7$43.28, May 3 11:07 am$43.28, May 3 11:07 am$42.80, May 7 - May 9$42.42, May 10 - May 12$42.42, May 10 - May 12$42.34, May 13 7:40 pm$42.34, May 13 7:40 pm$41.84, May 15 2:42 am$41.84, May 15 2:42 am$41.30, May 18 - May 20$41.30, May 18 - May 20$41.29, May 20 - May 26$41.29, May 20 - May 27$41.04, May 28 - Jun 2$41.04, May 27 - Jun 2$43.92, Jun 3 - Jun 5$43.92, Jun 3 - Jun 11$43.92, Jun 3 - Jun 11$43.43, Jun 9 - Jun 24$46.39, Jun 13 - Jun 14$43.43, Jun 9 - Jun 24$45.51, Jun 17 - Jun 19$43.43, Jun 9 - Jun 24$44.84, Jun 21 - Jun 24$43.43, Jun 9 - Jun 24$41.95, Jun 25 - Jun 26$41.95, Jun 25 - Jun 26$42.23, Jun 29 - Jul 1$42.23, Jun 29 - Jul 1$42.39, Jul 2 - Jul 3$42.39, Jul 2 - Jul 3$42.99, Jul 4 - Jul 5$42.99, Jul 4 - Jul 5$44.05, Jul 8 - Jul 9$43.43, Jul 7 - Jul 9$44.09, Jul 11 3:23 am$44.00, Jul 11 3:23 am$43.69, Jul 12 - Jul 13$43.69, Jul 12 - Jul 13$43.37, Jul 15 - Jul 16$43.37, Jul 15 - Jul 16$43.85, Jul 19 12:13 am$43.43, Jul 17 - Aug 29$43.93, Jul 20 - Jul 21$43.43, Jul 17 - Aug 29$44.15, Jul 22 - Jul 25$43.43, Jul 17 - Aug 29$44.61, Jul 26 - Jul 27$43.43, Jul 17 - Aug 29$44.55, Jul 28 - Jul 31$43.43, Jul 17 - Aug 29$44.56, Aug 1 - Aug 3$43.43, Jul 17 - Aug 29$44.37, Aug 4 - Aug 5$43.43, Jul 17 - Aug 29$43.97, Aug 7 1:04 am$43.43, Jul 17 - Aug 29$44.97, Aug 11 1:52 am$43.43, Jul 17 - Aug 29$45.19, Aug 14 - Aug 16$43.43, Jul 17 - Aug 29$46.43, Aug 17 - Aug 19$43.43, Jul 17 - Aug 29$46.52, Aug 21 - Aug 22$43.43, Jul 17 - Aug 29$46.02, Aug 23 - Aug 24$43.43, Jul 17 - Aug 29$45.91, Aug 26 12:53 pm$43.43, Jul 17 - Aug 29$45.47, Aug 29 8:07 am$43.43, Jul 17 - Aug 29$44.01, Aug 31 - Sep 1$44.00, Aug 31 - Sep 1$43.56, Sep 2 - Sep 6$43.56, Sep 2 - Sep 6$44.21, Sep 8 - Sep 10$44.00, Sep 8 - Oct 7$45.40, Sep 10 - Sep 12$44.00, Sep 8 - Oct 7$45.42, Sep 12 - Sep 14$44.00, Sep 8 - Oct 7$45.75, Sep 14 - Sep 15$44.00, Sep 8 - Oct 7$46.10, Sep 15 - Sep 19$44.00, Sep 8 - Oct 7$45.62, Sep 19 - Sep 20$44.00, Sep 8 - Oct 7$45.48, Sep 21 - Sep 24$44.00, Sep 8 - Oct 7$45.62, Sep 25 - Sep 26$44.00, Sep 8 - Oct 7$45.62, Sep 25 - Sep 26$44.00, Sep 8 - Oct 7$36.71, Oct 5 - Oct 8$45.89, Oct 10 5:37 am$44.00, Oct 10 - Oct 23$36.71, Oct 5 - Oct 8$47.39, Oct 11 - Oct 15$44.00, Oct 10 - Oct 23$36.71, Oct 5 - Oct 8$47.73, Oct 16 - Oct 17$44.00, Oct 10 - Oct 23$36.71, Oct 5 - Oct 8$47.42, Oct 19 - Oct 22$44.00, Oct 10 - Oct 23$36.71, Oct 5 - Oct 8$45.54, Oct 23 - Oct 24$45.25, Oct 23 - Oct 24$36.71, Oct 5 - Oct 8$45.13, Oct 26 7:54 am$45.13, Oct 25 - Oct 26$36.71, Oct 5 - Oct 8$47.18, Oct 29 1:07 am$45.25, Oct 27 - Nov 20$36.71, Oct 5 - Oct 8$47.21, Oct 31 10:17 pm$45.25, Oct 27 - Nov 20$36.71, Oct 5 - Oct 8$47.28, Nov 2 6:19 am$45.25, Oct 27 - Nov 20$36.71, Oct 5 - Oct 8$47.30, Nov 5 5:51 am$45.25, Oct 27 - Nov 20$36.71, Oct 5 - Oct 8$47.42, Nov 7 4:55 am$45.25, Oct 27 - Nov 20$36.71, Oct 5 - Oct 8$45.66, Nov 10 5:08 pm$45.25, Oct 27 - Nov 20$36.71, Oct 5 - Oct 8$46.03, Nov 12 - Nov 13$45.25, Oct 27 - Nov 20$36.71, Oct 5 - Oct 8$46.01, Nov 15 5:58 am$45.25, Oct 27 - Nov 20$36.71, Oct 5 - Oct 8$47.58, Nov 16 - Nov 18$45.25, Oct 27 - Nov 20$36.71, Oct 5 - Oct 8$44.89, Nov 20 - Nov 22$44.89, Nov 20 - Nov 22$36.71, Oct 5 - Oct 8$44.78, Nov 23 1:01 am$44.78, Nov 23 1:01 am$36.71, Oct 5 - Oct 8$46.25, Nov 25 - Nov 26$45.25, Nov 24 - Dec 18$36.71, Oct 5 - Oct 8$46.18, Nov 27 - Nov 29$45.25, Nov 24 - Dec 18$37.87, Nov 28 - Nov 29$45.91, Nov 30 - Dec 1$45.25, Nov 24 - Dec 18$37.65, Nov 30 - Dec 1$46.26, Dec 2 - Dec 3$45.25, Nov 24 - Dec 18$37.65, Nov 30 - Dec 1$46.53, Dec 4 - Dec 6$45.25, Nov 24 - Dec 18$37.65, Nov 30 - Dec 1$47.09, Dec 6 - Dec 8$45.25, Nov 24 - Dec 18$37.65, Nov 30 - Dec 1$46.92, Dec 9 8:02 am$45.25, Nov 24 - Dec 18$37.65, Nov 30 - Dec 1$46.25, Dec 12 - Dec 13$45.25, Nov 24 - Dec 18$37.65, Nov 30 - Dec 1$46.32, Dec 14 - Dec 15$45.25, Nov 24 - Dec 18$37.65, Nov 30 - Dec 1$47.01, Dec 17 1:49 am$45.25, Nov 24 - Dec 18$37.65, Nov 30 - Dec 1$47.03, Dec 18 3:55 am$45.25, Nov 24 - Dec 18$37.65, Nov 30 - Dec 1$44.99, Dec 20 12:29 pm$44.99, Dec 20 12:29 pm$37.65, Nov 30 - Dec 1$45.59, Dec 29 - Dec 31$45.59, Dec 29 - Dec 31$37.65, Nov 30 - Dec 1$45.19, Jan 1 - Jan 2$45.19, Jan 1 - Jan 2$37.65, Nov 30 - Dec 1$45.04, Jan 2 4:03 pm$45.04, Jan 2 4:03 pm$37.65, Nov 30 - Dec 1$45.83, Jan 9 - Jan 11$39.69, Jan 9 - Jan 11$37.65, Nov 30 - Dec 1$47.43, Jan 12 - Jan 14$46.10, Jan 12 - Jan 14$37.65, Nov 30 - Dec 1$46.34, Jan 14 - Jan 17$45.99, Jan 15 - Jan 17$37.65, Nov 30 - Dec 1$45.62, Jan 18 - Jan 19$45.62, Jan 18 - Jan 19$37.65, Nov 30 - Dec 1$45.58, Jan 19 - Jan 21$45.58, Jan 19 - Jan 21$37.65, Nov 30 - Dec 1$45.88, Jan 21 - Jan 23$45.88, Jan 21 - Jan 23$37.65, Nov 30 - Dec 1$46.04, Jan 25 - Jan 26$45.99, Jan 23 - Jan 26$37.65, Nov 30 - Dec 1$45.60, Jan 27 - Jan 28$45.60, Jan 27 - Jan 28$37.65, Nov 30 - Dec 1$45.53, Jan 29 - Jan 30$45.53, Jan 29 - Jan 30$37.65, Nov 30 - Dec 1$44.54, Jan 31 - Feb 2$44.54, Jan 31 - Feb 2$37.65, Nov 30 - Dec 1$44.70, Feb 4 - Feb 7$40.39, Feb 4 - Feb 11$37.65, Nov 30 - Dec 1$45.80, Feb 9 - Feb 11$40.39, Feb 4 - Feb 11$37.65, Nov 30 - Dec 1$46.79, Feb 13 - Feb 15$45.99, Feb 12 - Feb 14$37.65, Nov 30 - Dec 1$46.79, Feb 13 - Feb 15$46.10, Feb 14 - Feb 24$37.65, Nov 30 - Dec 1$46.43, Feb 18 - Feb 19$46.10, Feb 14 - Feb 24$37.65, Nov 30 - Dec 1$46.58, Feb 20 - Feb 21$46.10, Feb 14 - Feb 24$37.65, Nov 30 - Dec 1$46.61, Feb 23 - Feb 24$46.10, Feb 14 - Feb 24$37.65, Nov 30 - Dec 1$45.93, Feb 25 - Feb 26$45.93, Feb 25 - Feb 26$37.65, Nov 30 - Dec 1$45.32, Feb 28 - Mar 3$45.32, Feb 28 - Mar 3$37.65, Nov 30 - Dec 1$46.02, Mar 4 - Mar 5$46.02, Mar 4 - Mar 5$37.65, Nov 30 - Dec 1$45.61, Mar 8 - Mar 9$45.61, Mar 8 - Mar 9$37.65, Nov 30 - Dec 1$45.68, Mar 10 - Mar 12$45.68, Mar 10 - Mar 12$37.65, Nov 30 - Dec 1$45.94, Mar 13 - Mar 15$45.94, Mar 13 - Mar 15$37.65, Nov 30 - Dec 1$46.31, Mar 18 4:01 am$46.10, Mar 16 - Mar 18$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.98, Mar 19 - Mar 21$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.99, Mar 21 - Mar 23$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.85, Mar 24 - Mar 27$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.71, Mar 27 - Mar 29$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$44.20, Mar 29 - Mar 30$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$44.48, Mar 31 - Apr 2$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$44.45, Apr 4 - Apr 6$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$44.66, Apr 6 7:21 pm$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$44.79, Apr 8 - Apr 10$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$44.87, Apr 13 - Apr 15$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$44.96, Apr 17 - Apr 18$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.58, Apr 19 - Apr 20$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.63, Apr 22 - Apr 23$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.30, Apr 24 10:42 pm$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.74, Apr 28 - Apr 29$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.88, Apr 30 - May 1$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.83, May 3 2:32 am$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.69, May 5 - May 7$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$44.99, May 9 - May 11$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$44.81, May 13 - May 14$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.17, May 16 10:22 am$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.09, May 19 3:28 pm$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$44.93, May 23 12:34 am$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.81, May 25 2:49 am$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.45, May 27 7:37 am$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.34, May 28 - May 29$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.67, Jun 1 12:25 am$37.65, Nov 30 - Dec 1$46.10, Mar 16 - Mar 18$45.86, Jun 3 9:26 am$37.65, Nov 30 - Dec 1$46.15, Jun 5 - Jun 6$46.10, Jun 5 - Jun 6$37.65, Nov 30 - Dec 1$46.10, Jun 5 - Jun 6$46.08, Jun 9 - Jun 11$37.65, Nov 30 - Dec 1$46.11, Jun 13 5:14 am$45.62, Jun 13 5:14 am$37.65, Nov 30 - Dec 1$46.12, Jun 15 3:17 am$46.10, Jun 15 3:17 am$37.65, Nov 30 - Dec 1$46.10, Jun 15 3:17 am$45.49, Jun 18 - Jun 22$37.65, Nov 30 - Dec 1$46.10, Jun 15 3:17 am$45.20, Jun 24 7:23 pm$37.65, Nov 30 - Dec 1$45.40, Jun 28 - Jul 2$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$47.25, Jul 3 2:54 am$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$46.97, Jul 5 - Jul 8$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$45.19, Jun 28 - Aug 8$45.19, Jul 11 5:03 pm$37.65, Nov 30 - Dec 1$46.98, Jul 13 - Jul 15$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$46.19, Jul 17 8:31 pm$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$46.27, Jul 19 - Jul 20$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$46.40, Jul 22 12:39 pm$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$46.30, Jul 24 8:23 am$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$46.37, Jul 27 - Jul 28$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$46.41, Jul 29 - Jul 31$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$45.61, Aug 2 - Aug 3$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$45.32, Aug 5 9:03 am$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$45.29, Aug 8 6:05 am$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$45.19, Jun 28 - Aug 8$45.01, Aug 10 5:28 am$37.65, Nov 30 - Dec 1$45.19, Jun 28 - Aug 8$44.89, Aug 14 3:34 am$37.65, Nov 30 - Dec 1$45.19, Jun 28 - Aug 8$44.92, Aug 16 - Aug 19$37.65, Nov 30 - Dec 1$45.76, Aug 21 7:25 pm$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$45.81, Aug 23 4:59 pm$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$45.58, Aug 24 - Aug 26$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$45.69, Aug 28 - Aug 30$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$45.56, Aug 31 11:53 am$45.19, Jun 28 - Aug 8$37.65, Nov 30 - Dec 1$46.22, Sep 2 9:58 am$46.10, Sep 2 - Sep 15$37.65, Nov 30 - Dec 1$46.28, Sep 4 8:50 am$46.10, Sep 2 - Sep 15$37.65, Nov 30 - Dec 1$46.59, Sep 6 8:39 am$46.10, Sep 2 - Sep 15$37.65, Nov 30 - Dec 1$46.51, Sep 9 8:51 am$46.10, Sep 2 - Sep 15$37.65, Nov 30 - Dec 1$46.31, Sep 11 - Sep 15$46.10, Sep 2 - Sep 15$37.65, Nov 30 - Dec 1$46.31, Sep 11 - Sep 15$45.07, Sep 17 - Sep 21$37.65, Nov 30 - Dec 1$57.85, Sep 23 - Oct 1$45.14, Sep 23 - Oct 1$37.65, Nov 30 - Dec 1$57.26, Oct 2 1:01 am$44.57, Oct 2 - Oct 15$37.65, Nov 30 - Dec 1$58.69, Oct 2 - Oct 15$44.57, Oct 2 - Oct 15$37.65, Nov 30 - Dec 1$54.53, Oct 17 - Nov 18$43.41, Oct 17 - Nov 18$37.65, Nov 30 - Dec 1$55.87, Nov 19 - Dec 1$44.57, Nov 19 - Nov 22$37.65, Nov 30 - Dec 1$55.87, Nov 19 - Dec 1$44.75, Nov 23 - Dec 1$37.65, Nov 30 - Dec 1$59.63, Dec 3 - Dec 4$45.60, Dec 3 - Dec 8$37.65, Nov 30 - Dec 1$59.03, Dec 7 - Dec 8$45.60, Dec 3 - Dec 8$37.65, Nov 30 - Dec 1$47.49, Dec 11 - Dec 27$44.95, Dec 11 - Dec 15$37.65, Nov 30 - Dec 1$47.49, Dec 11 - Dec 27$44.75, Dec 16 4:32 pm$37.65, Nov 30 - Dec 1$47.49, Dec 11 - Dec 27$44.95, Dec 19 - Dec 20$37.65, Nov 30 - Dec 1$47.49, Dec 11 - Dec 27$44.75, Dec 23 - Jan 18$37.65, Nov 30 - Dec 1$55.87, Dec 28 - Jan 18$44.75, Dec 23 - Jan 18$37.65, Nov 30 - Dec 1$59.63, Jan 21 2:44 am$45.60, Jan 21 - Jan 26$37.65, Nov 30 - Dec 1$51.74, Jan 23 4:05 pm$45.60, Jan 21 - Jan 26$37.65, Nov 30 - Dec 1$55.87, Jan 27 - Mar 3$44.75, Jan 27 - Mar 27$37.65, Nov 30 - Dec 1$55.87, Jan 27 - Mar 3$44.75, Jan 27 - Mar 27$44.70, Feb 13 - Feb 26$55.87, Jan 27 - Mar 3$44.75, Jan 27 - Mar 27$54.12, Mar 9 - Mar 27$44.75, Jan 27 - Mar 27 93972,161 78,125 62,500 46,875 31,250 15,625 Oct Dec Feb Apr Jun Aug Oct Dec Feb Apr 2015 2016

Price Details

New

Latest $54.12 Mar 27, '16
Highest $59.63 Jan 21, '16
Lowest $41.04 May 27, '14
Average $54.83 (30d avg)
$55.36 (90d avg)
$54.93 (180d avg)
$50.45 (365d avg)
$47.01 (Lifetime average)
Added Sep 10, 2013

3rd Party New

Latest $44.75 Mar 27, '16
Highest $46.10 Sep 2, '15
Lowest $39.54 Jan 9, '15
Average $44.75 (30d avg)
$44.81 (90d avg)
$44.56 (180d avg)
$44.92 (365d avg)
$44.49 (Lifetime average)
Added Sep 10, 2013

3rd Party Used

Last Seen $44.70 Feb 26, '16
Highest $44.70 Feb 13, '16
Lowest $36.54 Oct 4, '14
Average $44.70 (90d avg)
$44.70 (180d avg)
$44.70 (365d avg)
$37.72 (Lifetime average)
Added Sep 10, 2013

Sales Rank

30 day average: 22,031
90 day average: 14,369

Product Description

This model can be used for measuring the freezing point of either propylene or ethylene glycol based cooling systems. It can also be used for checking the strength of electrolyte solution batteries. This precision instrument features high-quality optics with ultra smooth focusing. Scale range: 32 Degree F to -60 Degree F. The Hand Refractometer is a portable, precision optical instrument used for measuring the freeze point of engine coolant and the operation state of battery charging liquid. It is used on transportation vehicles, such as cars, tractors, tanks, ships, etc., which use propylene or ethylene glycol for coolant and sulphuric acid for charging liquid. When a liquid (such as coolant or charging liquid) is placed on the prism, the light passing through it is bent. The more concentrated the liquid, the more the light will bend. The refractometer contains a reticle, or scale, that is enlarged through the eyepiece to measure this bent light. The values of the scale have been established to evaluate the coolant or charging liquid.

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