Tongs, Riveted Joint, steel, nickel plated, 3/16" (5mm) wire size, 9" (229mm) length.

The "Hoffman Type" Electrolytic Support is used with associated glassware to demonstrate the electrolytic decomposition of water, hydrochloric acid, and other solutions. The unit consists of a cast iron base (H-21225) with insulated binding posts, support rod (H-21360), one burette clamp (H-8022),…

The Large Deluxe Water Bath supports the following standards: ASTM D6927, D5581, D4867 Water Bath with microprocessor-based temperature control same as H-1390, except volume is: 14 gallons (53L) and dimensions are 20" x 20" x 10" deep (508 x 508 x 254mm). Shipping wt. 74 lbs.…

The Deluxe Water Bath supports the following standards: ASTM D6927, D5581, D4867 Water Bath with microprocessor-based temperature control for precise temperature control throughout the range. Includes magnetic circulator, ensuring constant water temperature, and, a stainless steel shelf, which…

Screw Compressor Clamps are used to control the flow in flexible tubing. The clamps have a machined adjustment screw to permit accurate regulation of the flow. All corners are rounded to prevent cutting of the tubing. The clamps feature brass construction that is plated for corrosion resistance and…

Humboldt's Adjustable burners utilize the same high-quality die-cast bases as our Standard Burners, but provide a precision needle valve to achieve an accurate, adjustable flame. *Note: CFHs and BTU Outputs are figured on: 5 inch Water Column Pressures for Artificial and Natural Burners. 11 inch…

This clamp is constructed from hardwood with a smooth finish and self-closing spring. The clamp will accept tubes up to 3/4" (19mm) in diameter. Overall length is 7" (178mm).

The Single, Softening Point Apparatus Set supports the following standards: ASTM D36, E28, AASHTO T53 Ring and ball method softening point apparatus used for single determinations, asphalts, pitches, tars and most resins. Includes burner, beaker, support stand, 1 ring, wire gauze with ceramic…

Screw Compressor Clamps are used to control the flow in flexible tubing. The clamps have a machined adjustment screw to permit accurate regulation of the flow. All corners are rounded to prevent cutting of the tubing. The clamps feature brass construction that is plated for corrosion resistance and…

Measures feature convenient handle and graduations in milliliters and ounces on inside of cup.

Used to accurately and quickly count pendulum swings, bacteria colonies, drops from pipettes, alpha particles, etc. Tallies up to 9999 by one, quickly resets to zero. Mounted in round 2" (51mm) diameter chrome plated case with finger ring.

Heavy gauge nickel dishes have straight sides, flat bottom, and pour lip.

With corrugated tips and spot-welded joint. Overall length is 5" (127mm). Available in Nickel-plated steel or Stainless Steel.

Wooden handle and horsehair bristle. Bristle length is 2-3/4"x 1-1/8"x 3/4" (70mm x 29mm x 19mm), and the overall dimension is 10-1/2" (267mm).

Humboldt Aspirator Filter Pumps offer excellent performance for vacuum filtrations under both high and low water pressure conditions. The pumps feature a ball-type, positive-action valve in the suction tube which prevents water backflow if the pressure is reduced.

Economy Sieve Shaker, which complies with ASTM C136 Standards, the Humboldt Motorized Sieve Shaker can be used with 3", 5" and 8" sieves. 1/4 HP motor handles up to (10) 8" sieves, (12) 5" sieves and (16) 3" full-height sieves; and, (18) half-height 8" sieves. 1/4 HP motor, 115V, 60Hz with 30…

Hardened alloy tool steel, for crushing hard, brittle materials such as ores, minerals, etc. Mortar 76 mm diameter x 25 mm high Cavity 30 mm diameter x 9.5 mm deep, fitted with precisely machined, removable sleeve for holding crushed material in cavity Pestle 76 mm long x 25 mm…

Wire loop handle with wire bristles. Bristle length is 1-1/2"x 3/4"x 1/8" (38mm x 19mm x 3mm) and the overall dimension is 5-1/2" (140mm).

Two prong zinc-plated, stamped steel with aluminum alloy holder is adjustable by checknut to any angle Takes objects from 3/8” to 1 3/8” diameter. Fits rods up to 1/2” diameter. Length: 6 3/8”.

Screw Compressor Clamp, Standard Open-Jaw C-Clamp without side post. Jaw Opening: 0-7/8" (0-23mm) Max Height, 1-1/8" (30mm) Max Width

Screw Compressor Clamp, Closed-Jaw C-Clamp with Side post for tubing insertion. Jaw Opening: 0-7/8" (0-23mm) Max Height, 1-1/8" (30mm) Max Width

Humboldt Bunsen Burners are high-quality, American-made burners with nickel-plated, die-cast zinc bases. Burners feature aluminum mixing tubes and serrated gas inlet connections.  *Note: CFHs and BTU Outputs are figured on: 5 inch Water Column Pressures for Artificial and Natural Burners.…

Made of hardened alloy tool steel. Pestle has ball-end to fit bottom of mortar cavity. Mortar: 3 x 3 x 4-1/2"H (76 x 76 x 114mm); bore: 2" dia x 3" deep (51 x 76mm). Pestle: 9-1/2" (241mm) overall length. Shipping. wt. 16 lbs. (7.3kg)

Attaches to laboratory table tops up to 1-3/4" (45mm) thick. Cuts glass tubing up to 1-1/2" (38mm) diameter. Aluminum alloy casting with gray hammerloid finish. Hardened steel cutting wheel.

These inexpensive sets are used to bore holes in corks and rubber stoppers. They consist of plated tubing with precision ground cutting edges. The smooth plastic handles are stamped with a number designation. A punch is included with each set.

Distance from center of ring to center of clamp: 4-1/4" (108mm). Plated. Attaches to support rods up to 3/4" (19mm) in diameter.

Powder-coated with plated steel rod

Meets U.S. Pharmacopeia XIX. Made from hardened tool steel in accordance with specifications for Powdered Glass Test. Mortar has a flat-bottomed cylindrical cavity. Mortar: 76.2mm. O.D. cavity: 50.8mm dia x 43.9mm deep; Pestle: 50.4mm dia, 108mm overall length, Shipping. wt.: 8 Lbs

Ideal for intermittent use without frequent relighting. The burner features a sleeve-type air regulator and stopcock for gas control and an integral pilot light tube with screw for adjusting the pilot flame. Specifications: Gas type: Natural Inlet OD: 3/8" (10mm) CFH*: 5.3 …

This hand-operated centrifuge is ideal for rapid settling of suspended solids from small quantities of liquid in analytical or clinical procedures at speeds up to 2000 RPM. The hand crank and steel worm with bronze spiral gear is set at a 15 to 1 ratio. The long-sweep crank is detachable and…

1196Y26: Wooden handle and horsehair bristle. Bristle length is 2-1/2"x 1"x 3/8" (64mm x 25mm x 10mm) and overall dimension is 10-1/2" (267mm). 1196Y28: Wooden handle and horsehair bristle. Bristle length is 1-1/2" x 1-1/4" diam. (38mm x 32mm), and the overall dimension is 5-1/4" (133mm).

Hollow ground cutting blades in a conical arrangement for fast, effective sharpening of cork borers. Blades are hardened tool steel for long life.