Miura Co., Ltd.

Other

Miura Institute of Research & Developement Co., Ltd.

Yoshitami Tsubota

Sadatoshi Takechi

Kazuhiro Tachino

Yuuji Ukena

Katsufumi Isshiki

Takeshi Fukumura

Toshihiro Kayahara

Hideo Furukawa

Junichi Nakajima

Masazumi Yamashita

Satoshi Wakasa

Tomisada Kubota

Kimihiro Takechi

A harness indicator is highly reactive to a trace amount of Ca,, and is slow to degrade in a high temperature environment of greater than 50&deg; C. In one embodiment, the hardness indicator contains EBT, a pH buffer, and a masking agent as main components, and an admixture of Mg-EDTA. In another embodiment, the hardness indicator contains EBT, a pH buffer, and a masking agent as main components, and an admixture of anhydrous Mg-EDTA. In another embodiment, the hardness indicator contains EBT, a pH buffer, and a masking agent as main components, and an admixture of anhydrous Mg-EDTA and potassium sorbate. In a further embodiment, the hardness indicator contains EBT, a pH buffer, and a masking agent as main components, and an admixture of Mg-EDTA and potassium sorbate. In a further embodiment, the hardness indicator contains EBT, a pH buffer, and a masking agent as main components, and an admixture of potassium sorbate.

Hardness indicator

A liquid feeding apparatus quantitatively feeds a liquid by pressing and clogging an elastic tube between a press roller and an arc-shaped guide portion through rotational motion of the press roller. The liquid feeding apparatus includes a main unit in which the press roller is provided, and a liquid cassette which accommodates a liquid cartridge. One end of the elastic tube is connected to a reservoir for the liquid to be fed, and the other end is connected to a check valve. The liquid cassette is removably fitted to the liquid feeding apparatus so that the elastic tube is subject to pressing action of the press roller.

Liquid feeding apparatus having a cassette accommodating an elastic tube

Colorimeter

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Matsuyama, Japan

Yoshitami Tsubota