stop vcm migration... revolutionary lined tubing . . . clear, flexible... the new standard Just compare new BEV-A-LINE Lined Tubing with the leading clear, flexible PVC tubing used in food, beverage, drug and medical device applications...
If you're using clear, flexible tubing by any other name but BEV-A-LINE™ . . . your product may be exposed to vinyl chloride monomer and plasticizers and your "high purity" system is less than best.
vs.
kev-o-JÎné" Two tubings in one . . . liner and shell are merged together in a new extrusion process. Non-toxic liner... contains no VC monomer and no plasticizer. Stays glass clear... liner will not absorb liquids. Provides a neutral environment... contents undergo minimal change in pH. Excellent physical properties . . . all the advantages of PVC without the disadvantages.
ÇÇ VI
m
· Conventional unlined tubing . . . contains potential contaminants. · VC monomer, plasticizers and stabilizers are free to migrate into Β Λ contents. ^ ^ ^ ^ ^ ^ · Plasticized tubing . . . subject to ^ ^ • ^ ^ fogging, hazing and discoloration. • Contents can become acidic. • Good physical properties . . . but loss of plasticizer means loss of pliability. Prove it to yourself... write for our free test kit and samples on your company letterhead. Or circle reader number for literature only.
Only one tubing carries this brand of purity:
NVC
k Μ^^^ϋ ^fP"l^^ ^p ^ ^
Non-Cytotoxic, meets or exceeds standards in Pharmacopeia XIX, Class VI, pages 644-647
THERMOPLASTIC PROCESSES, INC.
- Non-Vinyl ChtorkJe Lined
ti w, Non-Toxic, meets standards per FDA reg. Τ 121.2570. 121.2522. 121.2005. 121.2514 Ν Meets or exceeds standards in National Formulary, "p" ™ Vol 14, pages 880 - 884. containers for injectables (plastics)
Distributed Nationally
Valley Road, Stirling, New Jersey 07980 N.J. (201) 647-1000 · N.Y. (212) 267-6220· TWX 710-997-9583 CIRCLE 202 ON READER SERVICE CARD
-.HPLC Solvents
-HELLMA . . . tomorrow's designs today !
by J. T. Baker
Maximum consistency lot to-lot, bottle-to-bottle, lot to-lot, bottle-to-bottle, lot to-lot, bottle-to-bottle, lot to-lot, bottle-to-bottle, lotExtremely tight specifications and superior product definition minimize the most frequent HPLC problems. 17 Baker HPLC solvents provide m a x i m u m repro ducibility. .. total predictability... ex ceptional consistency. A n d actual lot analysis lets you verify this. Write: HPLC Dept. 7 J.T. Baker Chemical Company Phillipsburg, N.J. 08865 (201/859-5411)
J.T.Baker
Hellma—the largest assortment of highest precision glass and quartz cells. Standard · Flow-through · Constant-temperature Anaerobic · Special Designs Also available-ULTRAVIOLET LIGHT SOURCES Deuterium Lamps · Mercury Vapor Lamps Hollow Cathode Lamps · Power Supplies
HELLMA CELLS,
CHEMICALS
CIRCLE 17 ON READER SERVICE CARD
INC.
Write for literature Box 544 Borough Hall Station Jamaica, New York 11424 Phone (212) 544-9534
CIRCLE 97 ON READER SERVICE CARD ANALYTICAL CHEMISTRY, VOL. 49, NO. 1 1 , SEPTEMBER
1977 ·
929 A
