the EDITOR'S column L.T.Hallett, Editor
E more we learn a b o u t t h e need for THcertified chemical s t a n d a r d s , t h e more complex t h e problem a p p e a r s t o be. We h a v e pointed out t h e growing need for more and more chemical compounds of certified high p u r i t y . W e have also noted efforts being m a d e in this area, particularly b y t h e N a t i o n a l B u r e a u of S t a n d a r d s and t h e American Petroleum Institute. After having read t h e R e p o r t on t h e Conference on Chemical C o m p o u n d s of Certified High P u r i t y , we realize t h a t this is a problem of major m a g n i t u d e . T h e r e is some question as t o w h e t h e r it will ever be resolved. I t seems evident, however, t h a t any substantial a d vances will require a lot of effort a n d considerable funds. T h e conference, sponsored b y t h e N a t i o n a l Science F o u n d a t i o n and t h e N a t i o n a l A c a d e m y of Sciences, was a t tended b y a representative g r o u p of 30 scientists from industrial associations, g o v e r n m e n t research agencies, nonprofit research institutes, and u n i versities. T h e y studied t h e problem from five different angles: t h e philosophical aspects, scope, specific classes of chemical compounds needed, financial resources available t o s u p p o r t t h e work, and t h e places t o perform t h e work and the organization to m a n a g e the operation. T h e conclusions of t h e g r o u p were t h a t s t a n d a r d s are needed in t h e physical, biological, a n d engineering sciences and t h a t it is desirable t o have such compounds generally available t h r o u g h some centralized agency. This agency should accelerate and a u g m e n t research on s t a n d a r d s and coordinate and eliminate duplication of research. W i t h respect t o the concept of p u r i t y , it w a s felt t h a t certification should s t a t e w h a t is known about t h e particular chemical compound. General s t a n d ards, defined as s t a n d a r d s of identity and s t a n d a r d s for t h e m e a s u r e m e n t of physical, t h e r m o d y n a m i c , and spectral properties, would identify t h e major component b y difference, with qualitative identification of minor constituents. A second k i n d of certified s t a n d a r d , called specific s t a n d a r d s , could b e defined for purposes of calibration a n d standardization and would give a complete q u a n t i t a t i v e identification of all minor constituents. I t was recommended t h a t t h e N a tional B u r e a u of S t a n d a r d s o r t h e N a -
VACUUM DISTILLATION PUMP SINGLE-STAGE CONSTRUCTION
Extra Large Oil Reservoir dilutes vapors, reduces sticking and corrosion of mechanism. ft Guaranteed Vacuum 20 microns (0.02 mm Hg) Greater Free Air Capacity 33.4 liters/minute Pump Revolutions—300 RPM Motor—1 /3 HP—1725 RPM Tubing Required—5/8-inch i.d. Over-all Dimensions of Mounted Pump 19^x11^x15% inches high Belt-tightening Provision Extra Supply of Duo-Seal Oil
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TALBOYS 13
A C K E R M A N
AVENUE
I N S T R U M E N T C O R P . EMERSON,
NEW
JERSEY
Circle No. 1 on Readers' Service Card
VOL. 32, NO. 1, JANUARY 1960
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