Test Tube pH Pens

Marsoni

M251S

$63.25

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

Test Tube pH PensFits standard test tubes 16 x 50 mm or larger. Highly stable and accurate readings with a large LCD display. Designed for simple one hand operation. Automatically calibrates to pH 4, 7 and 10 buffers and can be adjusted to recognize some other non standard buffers as well. Features hold function, and auto power off with low battery indicator. General Purpose Glass Probe: EPA compliant for labs and wine Penetration Probe: for food & soil Flat Tip

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The plates have a tiny amount of twist in the center and quite a bit of doming when flexed. While the outer edges are entirely floppy. Most of the center is smooth, but there are rough patches that flake off paper pieces when rubbed with a spoon or from a lot of moisture from food. The flat surface (not the inner walls) was able to withstand still water for about 10 minutes before weakening, so I wouldn't use it for wet or very moist foods.

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Reviewed in the United States on May 28, 2026

Thogar

New York, US

★★★★★ 2

Thinner Than Chinet, Far More Expensive

Size: 12 PACK

These platters are about the same size and shape as Chinet platters and are reminiscent of them in construction and form. However, these plates are about half as thick as a Chinet and at $10 for just 12 plates, that makes them FAR more expensive than Chinet which a 30-pack of their platters can be had for less than $7. So no, I won't be getting any more of these much thinner, much more expensive plates when Chinet offers a product that's usually sturdier than you need for far less than these platters. If they were cheaper than Chinet by a fair amount I'd have given them 5 stars as they're thick enough for most uses and thumbs up for compostability, but I have to call out the overpriced nature of them.

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Reviewed in the United States on January 16, 2026

Verified Purchase

Jim

Fort Morgan, US

★★★★★ 5

Quality

Size: 10 in-100 count

Perfect

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Reviewed in the United States on May 31, 2026