Fritz 35PPT Calibration Fluid 37ml

Marsoni

M251S

$17.95

Get it in 3 business days with 1 day shipping. Friday, May 29

Fritz 35PPT Calibration Fluid 37mlFritz 35ppt Calibration Fluid Use as a Reference for any Density Measurement Instruments Simple 2 or 3 drop Application Quickly Calibrate to 35 ppt or 1. 026 sg Pre measured refractometer calibration solution takes the guesswork out of properly calibrating your instrument with no need for expensive or unreliable measuring equipment. A refractometer is essential to the saltwater hobbyist for success. Maintain its accuracy by recalibrating regularly.

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These are great to fit the ball shooter I use with my dogs. Color orange makes it easy to find in grass or dirt. Problem is I have a chewer. He loves to chew on the ball and eat the orange fiber. So, the balls get wrecked and I have to replace. Gets costly. I wish they made this same size ball without the orange furry tennis-ball like covering. Maybe the toys would last longer.

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Reviewed in the United States on April 21, 2026

Verified Purchase

Thorne Donnelley Jr.

Charlottesville, US

★★★★★ 5

Safe for dogs

Color: Green, Size: Regular 2.5" - 4 Pack

Much better for dogs than used/dirty tennis balls. Worth the money for safety.

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Reviewed in the United States on May 27, 2026

Verified Purchase

Cassy

New York, US

★★★★★ 3

Easily breakable coating/fur

Color: Pink, Size: MINI 1.75" - 4 Pack

I wanted to love this item but sadly my dog really messed up the coating/fur on these balls so easily, other than that great product but with her being a puppy I got these smaller ones for that reason and I’m absolutely scared of her destroying things and getting stomach issues, so it’s just not worth it to me.

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Reviewed in the United States on April 20, 2026