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Ladd Ultrasonic Cleaners are designed to quickly and safely remove oil, tar, agar, food, rust, oxide, ink, blood, etc. from glassware, surgical and dental instruments, electronic components, precision parts and many other hard to clean items.

Excellent for darkroom solutions. For color or B&W photography. Celsius scale reads from -20^oC to 60 ^oC in 2^o increments. Fahrenheit scale reads from 0^oF to 140^oF in 2^o increments. 3.5 cm diameter dial, 15 cm long stainless steel stem. Adjustable height clamp secures thermometer to container.

Time range: up to 60 hours (in hours and minutes).

Darkroom Timers - Portable electric timers can be used to signal the end of a pre-selected interval or to switch external circuits ON/OFF automatically. Large (8" diameter), easy-to-read dial indicates both elapsed and remaining time in pre-selected intervals. Adjustable volume buzzer alarm signals end of pre-selected interval. Two separate grounded outlet receptacles for external appliances (maximum: 750 watts per outlet). Accuracy of +/- 0.015% at maximum dial setting. Black coated steel case resists acid and alkali stains. Keyholes for wall mounting plus convenient carrying handle. 125 VAC, 60 Hz, with three-wire grounded power cord and outlet receptacles.

Luminescent display provides a clearer image than backlit LCD, and uses less power. Easy to read in the dark; Battery provides up to four hours of continuous luminescence. Extra features include water-resistant housing, alarm clock, and calendar. Unit includes neck cord and 3 V battery. Timing capacity is 24 hours. Resolution is 0.01 sec for the first 40 minutes and 1 sec thereafter. Accuracy is ±3 sec/day. The display is 5/8" high. Timing modes include single-event, lap and cumulative split.

Dimensions are: 
2 7/8" wide x 3 1/4" high x 3/4" deep.

Fro-Tissuer Pen:

Designed to prevent frozen sections from falling off, moving or wrinkling on the slide during immunostaining procedures. The pen provides a sticky membrane which is applied to the slide onto which the section is placed. The membrane is stable up to 100° C and is suitable for vigorous applications such as in situ hybridization.