fimm Model 40 Micro HOT STAGE

New model with interchangeable pre-calibrated thermometers

For micro melting point determination and other fusion studies

: iyM

6885-W10

Micro Hot Stage, Thomas Model 40 (Kofler-type). For micro melting point determination and other fusion studies. Range 30 to 350°C. Accuracy, ±1°C between 30 and 300°C, and ±1.5°C above 300°C. Supplied with thermometers which can be replaced from stock without requiring re turn of hot stage for recalibration. Eliminates lost time and incon­venience.

Requires microscope such as Thomas 6517-J10, equipped with metal stage. Objectives used must have working distance of at least 8 mm. Construction. Hot stage chamber is 5.5 mm deep X 90 mm overall i.d. A 2 mm hole a t center of stage t ransmits light from below. Manipulator, which takes 1 X 1%-inch slides, extends through stage rim. Thermometers. Two supplied: one 30 to 230°C, the other 60 to 350°; both scaled in 1° divisions.

Accessories. In addition to the autotransformer for input control, the following accessories are provided in storage case with hot stage :

6888-D. Heal Baffle 6888-H10. Cooling Block 6888-E. Vacuum Sublimation Chamber 6888-J. Sublimation Block, Type A 6888-K. Sublimation Dishes (3) 6888-P. Micro Slides (24) 6889-C. Test Reagent Set 7020. Cover Glasses, No. 1,15 mm (1 oz.) 7022. Cover Glasses, No. 1,12 mm (1 oz.) 7022. Cover Glasses, No. 2,12 mm (1 oz.)

6885-W10. Micro Hot Stage, Thomas Model 40, com­plete assembly, as described. For 120 volts, 50 or 60 cycles, a.c. Without microscope 370.00 688S-W25. Micro Hot Stage, Thomas Model 40, with heat baffle and cooling block, but without accessories, test reagents, micro slides, and cover glasses. . .315.00 6885-W40. Ditto, without storage case 280.00

Detailed bulletin sent upon request.

ARTHUR H. THOMAS COMPANY Scientific Apparatus and Reagents.

VINE STREET AT 3RD · P.O. BOX 779 · PHILADELPHIA, PA. 19105, U.S.A.

Circle No. 74 on Readers' Service Card

112 A . ANALYTICAL CHEMISTRY

Thomas