SCIENTIFIC INSTRUMENTS

Gemological Refractometer  GR-1

Wide measering range, from nD 1.30 to 1.81

Supplied with polarazing attachment to observe double refraction.(birefringence)

With build-in shading cover to shut-out any ghostst-light and to get enough brightness for measurement.

Kyowa Spectroscope

This instrument used in a very simple and quick way for the observation of emission spectra, and a wavelenght scale may be attached to read the position of spectrum lines or obsorbation band in wavelenght.

DV-1 with fixed slit

DV-2 with adjustable slit

DV-3 with adjustable slit, comparison prism with mirror, and test tube holder with test tube.

DV-4 with adjustable slit, wavelength scale, comparison prism mirror and test tube holder with test tube. 

KYOWA SR Salinity refractometer

For Marine biologist and Oceanographers

Unique optical design, quick and easy determination os salinity of sea water.

The use of orange filter produces a sharp and accurate measurement

Prism-house is hermatically sealed and is water-proof

Measuring range: 0-160 (0-16%) for salinity

1.3330-1.3730 for refractive index

Accuracy: 0.5% for salinity

                 0.0020 for refractive index