THREE STAGE MERCURY DIFFUSION Ε & Κ Catalog # 0 7 0 0 THREE STAGE MERCURY DIFFUSION PUMP
6700
Speed: 6-100 liters per second depending on pressure after a fore-pressure of 10~ :i is attained. Attainable vacuum: 10 ~s or better Fore-vacuum: 15-20 Torr required Mercury required: 90 ml W a t t required: 600 The low vacuum side tubing is 18 mm The tubing of the high vacuum is approx. 41 mmO.D. The total height is approx. 24". Price: $130.00
6701
O u r Catalog #4123—Electric heater is recom mended for this Pump Price: $ 2 . 0 0 E & Κ Catalog # 6 7 0 1 THREE STAGE MERCURY DIFFUSION
Vacuum Pump TRAP Ε & Κ # 2 1 1 8 Designed to fit our #6700 & 6701 Pumps. Trap could be sealed to Pump on request.
2118
Trap length in mm 350
Tubing in mm 41
W e have added as one of our new items this THREE STAGE HIGH SPEED MERCURY DIFFUSION PUMP to our line of Mercury and Oil Diffusion Pumps. This Pump has been successfully tested and used in many Research Laboratories. The speed at which this Pump operates after a 10~ 3 fore pressure is attained, is amazing. The ultimate vacuum of 10~8 or better can easily be obtained. For efficient and dependable performance we feel confident in offering this pump. Write for our catalog.
ECK & KREBS, I N C . M A N U F A C T U R E R S
PUMP
Same as our #6700 except has boiler for gas heating. Price: $125 . 0 0
Trap Dia. in mm 64
PUMP
SCIENTIFIC LABORATORY GLASSWARE MANUFACTURERS OF HY-VACUUM
price $ 9 . 0 0 each
O F
EQUIPMENT
27-09 40th AVE., LONG ISLAND CITY, NEW YORK
TEL. STILLWELL 6-6077-8
N.I.L.-KEEPER OF THE NEW FLAME PHOTOMETER! 4 indispensable methods with the flick of the switch! METHOD
USE
1. Internal standard with lithium base, balanced to a null over 30 inches of 10-turn potentiometer (1000 di visions).
1. For highest bility.
2. High speed o u t p u t w i t h internal stand ard f o r routine clinical w o r k .
2. Internal standard with readout in milliequivalents directly on meter. 3. Direct reading without standard.
accuracy a n d reproduci
3. For qualitative and semi-quantitative w o r k . Invaluable f o r screening con centration ranges of Na and Κ in urine samples.
internal
4 . For detecting m i n u t e traces and small concentration differences.
4. High sensitivity—5 to 7 times # 1 Method.
UNIQUE FEATURES •
Switch f r o m Ν · to Κ w i t h o u t re-zeroing.
•
Photo-resistive cells, no photocells.
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Fast electronic galvanometer.
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24-hour stability—no drift.
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Round-the-clock thermal e q u i l i b r i u m .
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Single dilution f o r N a a n d K.
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Horizontal burner f o r safety a n d cleanliness.
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Closed burner system unaffected b y smoke or chemical contaminants.
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Equally suitable w i t h p r o p a n e , natural, or city
•
Interference
•
Micro
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Easy-to-read
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Simple trouble-free operation.
gas.
In Metropolitan Washington, D.C.
filters.
samples
as small
scale
for
as 0 . 0 5 m l .
all four
methods.
National Instrument Laboratories, Inc. 12300 Parklawn Drive, Rockville, Maryland
Phone: 933-1144
Bulletin 4-7000
Circle No. 150 on Readers' Service Card
56 A
·
ANALYTICAL CHEMISTRY
Circle No. 31 on Readers' Service Card
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