A sample plate for mass spectrometric analysis of a specimen is provided comprising a substrate having an electrically conductive surface, a mask applied to the electrically conductive surface.

A witness plate (12) collects dust or other particulate matter in a controlled environment.

A sample plate for mass spectrometric analysis of a specimen is provided comprising a substrate having an electrically conductive surface, a mask applied to the electrically conductive surface.

In a preferred embodiment, twelve LEDs (D1, Dx) illuminate the top surface of the telltale plate (P1a) at a low angle of incidence.

This rate was set into the camera, after I put a witness of a drop of my sputum on the witness plate.

an amplification reagent control (also called no template control) shall be used for each plate or series of PCR assays.

A sample plate for mass spectrometric analysis of a specimen is provided comprising a substrate having an electrically conductive surface, a mask applied to the electrically conductive surface.

A separate plate shall be inoculated with a reference isolate of ISAV as a positive control, as follows.

A witness plate (12) collects dust or other particulate matter in a controlled environment.

Fortunately a witness was able to catch the license plate number.

The indicator (18) is fixed to the cover plate (12, 12') over the stopper (122).

a positive DNA target control shall be used for each plate or series of PCR assays

The license plate number of the vehicle was recorded by a witness.

A sample plate for mass spectrometric analysis of a specimen is provided comprising a substrate having an electrically conductive surface, a mask applied to the electrically conductive surface.

A commemorative plaque has been installed as a witness to the battle.