LTI-BLOCK TUBE HEATERS

For continuous heating ot constont temperatures, the multi-

block tube heater (Model 100) combines convenience with

adaptability. Cost aluminum blocks provide dry, flomeless

heat-without smoking, without odor, Controls and heating

elements ore built into the base. Heating blocks ore inter-

changeable to be used in any combination to meet your

laboratory's needs. For maximum thermal stability test tubes

fit into heavily insulated heot transfer blocks.

Multi-block TUBE HEATERS ore ADAPTABLE * temperature selection from ambient to 3OO'C - regulated to `- 1' (+- I % above 100°C) * interchange blocks allow simultaneous heating of several sizes of tubes and/or liquid baths ti rugged construction withstands continued heavy "se b compoci unit takes little bench space. con be moved easily from place to o&e.

CONVENIENT $I cost aluminum blocks eliminate the mess and inconvenience of oil, sand and water baths * interchangeable blocks allow simple conversion from tube heater to liquid bath A tube heating blocks ore available for tubes with ODs up to 16 mm.: up to 19 mm.; up to 25 mm.

There ore os many uses for the multi-block tube heater os there ore procedures requiring controlled temper. otures.

Just to nome o few: * incubation of blood chemistries such os glucose and cholesterol + wet ashing for PBl's b evaporation of solvents after extractions b digestions * melting solids and keeping them in liquid stote * determining melting and boiling points * inactivating cultures

I should you need sirnultoneous operation ot severo~ "nits at different temperatures, the single-unit heating base (Model 120) is the answer. The some heating blocks

used in the three-unit heating bore may be used in this smaller heating base. The

same sturdy construction os the larger unit assures the some reliable performance.

750 NATIONAL COURT, RICHMOND. CALIFORNIA. 94804-

L

Model 101, 102, 103 Tube Block Solid aluminum block with holes for ony one of three standard test tube sizes. Top covered with 1" of insulation. Total depth of holes is 4". Dimensions: 41/e" x 37/8" x 4" high Net Weight: 3 lb. Model 101 has 8 holes 11%" diam- eter heats tubes up to 25 mm. OD Model 102 has 14 holes 25/32" diameter heats tubes up to 19 mm. OD Model 103 has 14 holes a/" diom- eter heats tubes up to 16 mm. OD Price, each . .._........_........_ $47.50 Model 104 liquid Both Block Constructed of aluminum, the bath has inside dimensions of 3%" long x 3'%" wide x 3%" deep. Net weight: about 234 lb. Price . . . . . . . . . . . . . ..__................ $42.00

Model 100 Heating Base This basic heating unit for the vor- ious selected tube and bath blocks contains o high wattage heating element and o thermostat. The pilot light tells you when the heater is in operation. It is fully insulated, enclosed in o stainless steel jacket, ond designed for continuous opera- tion on 115 volts, 50/60 cycle AC supply and draws 500 watts. The over-all dimensions ore 6.5/16" x 13%" x 8%" high. Any combina- tion of three 101, 102, 103, or 104 blocks, may be used in this base. Net weight: 18 Ibs. Price . ..___.._......___.............. $225.00 Model 120 Heating Bare This is the single-unit version of Model 100. It holds any one of the 101, 102, 103, or 104 blocks. It is especially useful where only o few analyses ore performed. Over-all dimensions ore 6.3/16" x 63/8" x 8%" high. Draws 250 watts. Net weight: 10 lb. Price .__.............__. x $144.00 Model 105 Aluminum Sleeves For additional flexibility, the fol- lowing sleeve inserts are available to reduce the size of any number of holes in a particular block: Diameter SIZE from to A - reduces hole 1%" 25/32" 6 - reduces hole 1%" %" C - reduces hole 1%" 17/32" D reduces hole 25/32" 17/32" E - reduces hole a/4" 17/32"

5TH 100 11.87