V O L U M E 25, NO. 4, A P R I L
ACCULUTE . . . tor rapid, accurate of Volumetric Solutions.
43 A
1953
preparation
PARR Calorimetric THERMOMETERS
. . . Laboratories requiring speed a n d accuracy a r e using Acculute w i t h excellent results.
For reliable measurement of bomb calorimeter temperatures, and for other laboratory tests. I These are etched, solid-stem, mercuI rial thermometers, approximately 23 inches long, made to rigid A.S.T.M. and Parr specifications.
Acid Acetic, 1 Ν, 1/2 Ν, 1/4 Ν, 1/10 Ν $2.25 Acid Arsenous, 1/10 Ν 2.00 Acid Hydrochloric, 1 Ν, 1/2 Ν, 1/4 Ν, 1/20 Ν, 1/100 Ν 1.85 Acid Hydrochloric, 1/10 Ν 1.50 Acid Nitric, 1 Ν, 1/2 Ν, 1/4 Ν, 1/10 Ν 2.25 Acid Oxalic, 1/10 Ν, 1/100 Ν 2.25 Acid Sulphuric, 1 Ν, 2/3 Ν, 1/2 Ν, 5/28 Ν, 1/16 Ν, 1/25 Ν, 1/28 Ν, 1/50 Ν 1.85 Acid Sulphuric, 1/10 Ν 1.50 Ammonium Hydroxide, 1 Ν, 1/2 Ν, 1/4 Ν, 1/10 Ν.... 2.75 Ammonium Thiocyanate, 1 Ν, 1/2 Ν, 1/4 Ν, 1/10 Ν . 2.50 Barium Chloride, 1/2 Ν 3.00 Barium Chloride, 1/5 Ν 2.75 Barium Chloride, 1/10 Ν 2.00 Bromine (Bromate-Bromide, 1/10 Ν 3.00 Ceric Sulphate, 1/10 Ν 4.50 Ferrous Ammonium Sulphate, 1/10 Ν 2.75 Iodine (Iodine-Iodide, 1/5 N, 1/20 N, 1/100 Ν 2.50 Iodine (Iodine-Iodide), 1/10 Ν 2.25 Iodine (lodate-lodide), 1/10 Ν 5.00 Iodine (lodate-lodide, 1/20 Ν 3.75 Potassium Bichromate, 1/2 Ν 2.25 Potassium Bichromate, 1/10 Ν 1.75 Potassium Bromate, 1/10 Ν 2.50 Potassium Bromide, 1/10 Ν 2.50 Potassium Biiodate, 1/100 Ν 3.50 Potassium Carbonate, 1/10 N, 1/16 Ν 2.00 Potassium Ferrocyanide, 1/10 Ν 2.75 Potassium Hydroxide (C0 3 f ree), 1 N, 1/2 N, 1/4 N.. 2.15 Potassium Hydroxide (C0 3 free), 1/10 Ν 1.90 Potassium lodate, 1/10 N, 1/100 N, 0.0312 Ν 2.50 Potassium Permanganate, 1/4 N, 1/5 Ν 2.25 Potassium Permanganate, 1/10 N, 1/16 N, 1/20 N, 1/50 N, 1/100 Ν 2.00 Potassium Thiocyanate, 1/10 Ν 2.50 Silver Nitrate, 0.282 Ν 5.00 Silver Nitrate, 1/10 N, 0.0282 Ν 2.50 Sodium Arsenite, 1/10 Ν 1.85 Sodium Carbonate, 1/10 Ν 1.50 Sodium Carbonate, 1/100 Ν 1.65 Sodium Chloride, 1/10 Ν 2.00 Sodium Hydroxide (COs free), 1 N, 1/2 N, 1/4 N, 1/5 N, 1/20 N, 1/50 N, 1/100 Ν 2.15 Sodium Hydroxide (COa free), 1/10 Ν 1.90 Sodium Oxalate, 1/10 Ν 1.85 Sodium Thiocyanate, 1/10 Ν 2.50 Sodium Thiosulphate, 1/10 Ν 1.50 Sodium Thiosulphate, 1/100 Ν 1.85 Sodium Thiosulphate, 0.02308 Ν 2.50 Starch Indicator (for lodometric Titrations) 2.75 72 ampoules—5%, 144 ampoules—"
SARGENT NEW SARGENT CATALOG NOW AVAILABLE
10% Discount. In ordering, specify normality desired.
SCIENTIFIC LABORATORY INSTRUMENTS•APPARATUS • SUPPLIES • CHEMICALS E. K. SARGENT & COMPANY, 4647 W. FOSTER AVE., CHICAGO 30, ILLINOIS MICHIGAN DIVISION, 1959 EAST JEFFERSON STREET, DETROIT 7, MICHIGAN SOUTHWESTERN DIVISION, 5915 PEELER STREET, DALLAS 9. TEXAS
Parr calorimetric thermometers are i n d i v i d u a l l y checked against a certified platinum re sistance thermometer u n d e r carefully controlled conditions. The scale corrections thus de termined are reported on a test certificate supplied with each instrument. Available in both Fahrenheit and Centigrade r a n g e s with either Parr or NBS certification. Parr No.
A.S.T.M. No.
1601 1602 1603 1611 1613
56F -49T 56C-49T 56F-49T 56C-49T
Range 66 - 95 F. 6 5 - 105 F. 19 - 35 C. 66 - 95 F. 19-35C.
Subdivisions 0.05 0.05 0.02 0.05 0.02
f. F. C. F. C.
N u m b e r s 1611 - 1613 certified by N.B.S.; others by PARR. Order
Parr EST.
from your Parr Dealer, to the factory.
INSTRUMENT COMPANY MOLINE,
ILLINOIS
1699
MAKERS OF CALORIMETERS A N D PRESSURE
REAfTTiON
EQUIPMENT
