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ATC Portable Saltwater Refractometer

Marsoni M251S
Sale price$79.95
Pay 4 payments of $19.99 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
ATC Portable Saltwater RefractometerFeatures: Used to measure the salinity and specific gravity of the water. Sturdy and light weighted Aluminum body. Superior quality rubber grip. High quality and accurate testing result. Can be easily calibrated with a mini screw driver. Automatic temperature compensation (ATC) Easy to use, convenient to carry. Specification: Size(approx): 195 x 40 x 40mm Package weight: 8. 4oz 237g Measure Range: 0 100%(0 10%) Accuracy: 0. 001sg(1%) Salinity
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
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4.0 ★★★★★
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Grantham, US
★★★★★ 5
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I swear by Seafoam. It has really helped out my small engines, especially the 2 strokes and ones that sit around for long periods of time like my leaf blower and roto tiller. After I started adding Seafoam every time I get fuel I have had zero starting issues. They can sit all year and they will still start right up. In my car/trucks with higher miles I've used it to clean out the crankcase with great results. I add a can to the oil right before doing an oil change. I add a can then take a short drive(10 miles) to make sure the oil is up to operating temperature and change the oil once I get home. It does a good job cleaning any sludge out of the pan and the new oil stays looking fresh/clean way longer.
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Reviewed in the United States on May 4, 2026
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