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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Very sturdy and made of quality material. Some people may prefer an even larger version if they use more products but thisone fits perfectly on the ledge behind my sink and is just big enough for the products I use daily when cleaning the kitchen. My only complaint is that the drip tray is about ¼ of an inch too short lengthwise so if all your products get a little water on them, you may get some drippage on the counter but I just slid it to the far left side where the sponges go because that's where it's needed most. I installed it backwards because I can't remove the tray from the front due to the sinks edge being raised too high. I also installed the rag holder in the opposite direction so that I can fit taller/more products in the back, I just think it works better that way imo. Overall, I'm highly satisfied with this product.

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Reviewed in the United States on February 21, 2024

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SC,CaliGal

Pawtucket, US

★★★★★ 5

Noah's Ark

It's the largest caddy I could find that is great. Compared with other product reviews: no assembly required, sturdy, scratch protected feet, no rusting, etc. I bought clear and black spray, foam and capped bottles for it and just love having all my natural cleaning products out, handy, coordinating and looking good. Add a splash of color with some nice kitchen sheers or dish cloth. I like that it's not broken into a lot of compartments, but rather mostly platform to mix and match lots of bottles onto. I do have a long handled brush, and the basket holds it beautifully without tipping. I also found a silicone draining mat I like the look of, and it fits Perfectly under the caddy in place of the clear/white tray it comes with. https://www.amazon.com/dp/B0BHQ9MRZQ?psc=1&ref=ppx_yo2ov_dt_b_product_details Since I see this caddy set up every day, I'm happy to have a quality product on display.

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Reviewed in the United States on January 29, 2024

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Draper, US

★★★★★ 5

Great product.

This stand works perfectly for me! Ive bought a lot and they either rust or the tray leaks water or you have to let the built in metal tray run directly in to the sink, which doesn't work if the sink is raised even a little bit. This stand holds multiple cleaning tools, sponge brushes etc, the drain plugs and I can hang my cleaning cloth to dry. It is perfect. The tray catches all the water drips and cleans easily. It is compact and makes my kitchen counter look neat.

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Reviewed in the United States on February 10, 2025

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Karen

Omaha, US

★★★★★ 5

Keeps you organized at the sink

It does the job and it keeps it organized by the sink

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Reviewed in the United States on April 5, 2026

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Arlene