Sample concentrator filter
Sample inlet liner
Sealing mechanism for gas chromatograph machines
Separation column for analyzing gases
Separation-column unit for a gas-chromatograph and method...
Silver halide emulsion sensitized with a fused diazepine
Silver halide emulsions containing hexathiocane thiones as sensi
Silver halide photographic material containing an isourea deriva
Silver halide photographic material containing an organic compou
Silver-halide emulsion sensitized with an asymmetrical disulfide
Spectral sensitization of direct-positive silver halide emulsion
Spectrally sensitized silver halide emulsion containing more tha
Sulfur-sensitized AgX emulsion containing cubic AgX grains and a