초록 ▼

The invention provides a photometric method of determining courses of reaction in a specimen, in which method the intensities of the transmitted light and of the stray light are measured, wherein the two intensities are measured simultaneously and the electrical signals corresponding to the transmit

The invention provides a photometric method of determining courses of reaction in a specimen, in which method the intensities of the transmitted light and of the stray light are measured, wherein the two intensities are measured simultaneously and the electrical signals corresponding to the transmitted light and to the stray light are combined to form one signal. The invention makes it possible to perform reliable measurement even with low levels of transmitted and stray light. The method is preferably used in determining the coagulation times of blood. Apparatus for carrying out the method is also disclosed.

대표청구항 ▼

A photometric method for determining the coagulation time of a sample, said sample including blood mixed with a reagent, comprising: detecting the intensity of a light beam transmitted through said sample and forming an electrical signal proportional thereto; detecting, at an angle of from 90 to 180

A photometric method for determining the coagulation time of a sample, said sample including blood mixed with a reagent, comprising: detecting the intensity of a light beam transmitted through said sample and forming an electrical signal proportional thereto; detecting, at an angle of from 90 to 180 degrees to the transmitted light beam, the intensity of light scattered by said sample and forming an electrical signal proportional thereto; combining said electrical signals to form a combined signal; from said combined signal, determining the coagulation time of said sample.