Wire Gauze
VIAL, Homeopathic, Flint Glass, Short Form—With flat bottom and lip for cork stoppers. VIAL, Homeopathic, Flint Glass, Short Form —-With aluminum screw cap. not lined. WATCH GLASS—Of thin glass well annealed, with ground edges. WIRE GAUZE, Brass—36 Inches wide. WIRE GAUZE, Chromel—In squares; 16 mesh; of No. 24 wire. WIRE GAUZE SQUARE, Iron—Plain. WIRE GAUZE […]
Chemicals and Reagents
In presenting the following listing of the chemicals and reagents most generally used in quantity in smelting, refining and assaying, we are listing only a limited number of the many chemical items which we stock in our San Francisco and Los Angeles warehouses. We are direct agents of some of the largest manufacturers of commercial and industrial chemicals, […]
Sampling for Assaying
Sampling is the most important procedure in arriving at the value of an ore. Improper sampling makes other procedures, including assaying, valueless, as the sample must truly represent the ore from which it is taken. Before sampling, clean fresh faces must be exposed in order to prevent the possibility of salting. Having taken a large representative sample […]
Equipment for Mercury Retort and Condenser
RETORT, Pyrex Glass—With ground-in Pyrex Stopper. RETORT, Iron—Nevada pattern. Oval top with iron delivery pipe. Ground-in cover. This type offers a distinct advantage over the old type as it will hold more and there is space for expansion in the cover, preventing possibility of fracture from expansion. The cover is held in place by a heavy yoke, with a wrought […]
Radioscope
RADIOSCOPE—An instrument for detecting the presence of radio-activity in waters, ores, etc. by the scintillation method. Any material containing radium constantly throws off emanations which will produce minute flashes of light on striking a screen of phosphorescent zinc sulphide. The radioscope consists of a suitable glass jar in which the sample is placed, and, if dry, […]
Laboratory Respirators
RESPIRATOR, Automatic, Braun—Wet sponge type. Protects the throat and lungs from dust, poisonous gases and all other impurities. Persons engaged in dry crushing, grinding, cyaniding, polishing, etc. will find this respirator invaluable. Made of flexible rubber, the air being inhaled through a flat, wet sponge, and exhaled through an automatic valve on the side; […]
Glass Pipettes and Medicine Droppers
PIPETTE, Medicine Dropper—Straight tip; with cork shaped rubber bulb. PIPETTE, Medicine Dropper—Straight tip; with rubber bulb. PIPETTE, Medicine Dropper—Curved tip; with rubber bulb. PIPETTE, Volumetric or Transfer, Normax—With bulb at center. Graduated to meet the requirements of the U.S. Bureau of Standards, but without control stamp or certificate. Calibrated at 20° C. PIPETTE, Measuring, […]
Mechanical Gold Pan
PAN, Gold Washing, Miner’s—Made of polished copper. Diameter 16 inches. PAN, Gold Washing, Miner’s—Made of polished steel. With rolled edges. PAN, Gold Washing, Miner’s—Similar but with copper bottom, for amalgamating. Diameter, 16 inches. PAN, Gold Washing, Miner’s—Similar but with silver plated copper bottom. Diameter 16 inches. PAN, Vanning Plaque, Richard—Made of iron, white enameled. Diameter, […]
Muffles and Ovens
Muffles MUFFLE, Clay—Colorado make. Muffles should always be ordered by letter, as, on account of small difference in the size of many muffles, description by letter reduces chance of error to a minimum. If necessary to give other specifications, give outside dimensions. OVEN, Drying, Electric—A substantially constructed and well designed electric drying oven built of […]
Molds and Mortars
MOLD, Bullion or Ingot, Iron-Inside dimensions 1x1x3½ inches. Capacity 20 ounces in gold ; 10 ounces in silver. MOLD, Bullion or Ingot, Iron-With sliding bar to cast any length desired. Inside dimensions 1½x1½x8 inches. Capacity 100 ounces in gold, 55 ounces in silver. MOLD, Bullion or Ingot, Iron-Round corners. The capacities are approximate, and the […]