Abstract The present invention intends to generally maintain the microplate having added test samples in wells therein at even temperature for measuring biochemical or biological reaction accompanying changes in absorbance such as enzyme reaction. Monochromatic lights with various wave lengths from a light source 3 are transmitted through the test samples added to a plurality of wells in a microplate 1 to measure absorbance of the test sample. For this end, a metal plate 2 with good heat conductivity is substantially contacted with the bottom of each well in the microplate 1 and a perforated board 7 is disposed with an air space over the microplate 1 at the starting position thereof. Warmed air heated by a heater 17 is blown onto the microplate 1 through the perforated board 7 and is circulated along the metal plate 2 within a chamber 9.
A photometer for transmitting monochromatic light with various wavelengths through test samples in a plurality of wells in a microplate for measuring the absorbance of the test samples, characterized in comprising a metal plate with good heat conductivity disposed substantially in contact with the bottom surface of each well of said microplate, a board having a plurality of openings therein and disposed with an air space over said microplate at a starting position thereof, air circulation means for enforcedly circulating air, and heating means to heat the air wherein said microplate, said metal plate and said board are disposed in a chamber, wherein air is blown onto the upper surface of said microplate by way of said board having openings and is circulate along said metal plate with good heat conductivity.
Claim 2
Dependent Claim
131 words
A photometer for transmitting monochromatic light with various wavelengths through test samples in a plurality of wells in a microplate for measuring the absorbance of the test samples, characterized in comprising a metal plate with good heat conductivity disposed substantially in contact with the bottom surface of each well of said microplate, a board having a plurality of openings therein and disposed with an air space over said microplate at a starting position thereof, air circulation means for enforcedly circulating air, and heating means to heat the air wherein said microplate, said metal plate and said board are disposed in a chamber, wherein air is blown onto the upper surface of said microplate by way of said board having openings and is circulate along said metal plate with good heat conductivity.
Claim 3
Dependent Claim
36 words
A photometer in accordance with claim 1 wherein said metal plate with good heat conductivity is formed with openings at the locations corresponding to the wells in said microplate under which said metal plate is placed.