Simple Respirometer

Marsoni

M251S

$40.81

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

Simple RespirometerThe apparatus is designed for comparing rates of absorption or evolution of gases by small organisms, during respiration. The apparatus consists of two stoppered boiling tubes connected by three way taps to either limb of a graduated manometer. One tube holds the organisms and has a syringe for altering the level of liquid in the manometer during setting up. The other tube acts as a control thermobarometer. CO2 given off by the respiring organisms is

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I bought this ball 6 months ago and feel obligated to come back all these months later to say how great it is! My Frenchie has killed every toy he’s ever had but not this ball! He absolutely loves this ball. It’s lightweight and can be used for both indoor and outdoor play and still looks brand new.

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Reviewed in the United States on November 30, 2025

Verified Purchase

Adam Holmes

Carnegie, US

★★★★★ 1

good ball, wrong color

Size: Medium

I think the hot-ee roller is a great ball! My problem is that there is no option to select a color. I thought I was getting a purple one, since that is what is shown in the picture. As usual, I failed to read that it was assorted colors. I have a peculiar little dog that will only play with the purple one. His current purple one is in tatters. You could hardly even call it a ball at this point. We have red, blue and green and they are invisible to him.

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Reviewed in the United States on May 14, 2026

Verified Purchase

Tammy James

Phoenix, US

★★★★★ 5

HEALTH & BEAUTY

Flavor Name: XL silicone socks 2 pairs

LOVE IT

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Reviewed in the United States on April 13, 2026

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Barb W

Boise, US

★★★★★ 3

Stains easily. Tight for men's size 11 feet

Flavor Name: XL silicone socks 2 pairs, Flavor Name: XL silicone socks 2 pairs

Husband wore dark cotton socks over these gel foot covers overnight and the covers picked up color from the socks. Tried hand washing, even dabbing with a bleach soaked paper towel, but the stains remained. The covers are a bit tight for men's size 11. Edit: After a few more hand washings the stains began to fade. However one tore around the leg opening when taking it off.

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Reviewed in the United States on August 10, 2024

Verified Purchase

San Leandro, US

★★★★★ 1

Worthless. Tore on first use.

Flavor Name: XL silicone socks 2 pairs

The first time I put these on my feet, the whole toe broke right through. They were a proper fit and my feet are well pedicured. Just very poor quality. I don’t recommend.

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Reviewed in the United States on August 2, 2024