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We think our high-precision recorders are the most reliable on the market. And we mean to prove it.
Function—reliable, precise, unflappable function—is the key to recorder design at Sargent-Welch. To underscore this point, we've warranteed our recorders for two full years against all defects in material or workmanship—far and away the best guarantee of quality on the market today. For voltage or current input signals; for linear or logarithmic measuring and recording; for pH, temperature, strain, thermal conductivity, transmittance and absorbance, weight, optical rotation, viscosity and many other variables, Sargent-Welch recorders remain unexcelled for precision. And unequalled for reliable performance and long life. Many of our customers have told us that our recorders are "too good." It's the kind of criticism we can take—and take with a smile. Because for your investment we believe you should have maximum performance with minimum
maintenance over the longest possible period of time. In the laboratory—where capital dollars are precious and performance is critical, Sargent-Welch recorders are the standard-bearers. Call your SargentWelch representative for a demonstration or write to us direct for more information. Model S R G : Our basic recorder Seven precalibrated spans S e v e n chart speeds. Guarded circuits and filtered inputs. Accuracy ±0.25%. Reproducibility ±0.1%. Full-scale p e n r e s p o n s e less t h a n 1 s e c o n d . Basic price: $1075. Model DSRG: Dual-pen recorder Two linear channels. S a m e precision p e r f o r m a n c e c h a r a c t e r i s t i c s as M o d e l S R G . B a s i c price: $1850. Model SRLG: The SRG with the addition of a l o g a r i t h m i c f u n c t i o n . Basic p r i c e : $ 1 3 7 5 . Model DSRLG: Dual-pen logarithmic capability. Ideal for r e c o r d i n g transmittance and absorbance simultaneously. Or for Circle No. 1S8 on Readers' Service Card
l i n e a r / l o g r e c o r d i n g of any t w o t i m e synchronized variables. Basic price: $2225. Model TRG: Vertical chart recorders for stacking with gas c h r o m a t o g r a p h s and o t h e r i n s t r u m e n t a t i o n o r f o r m o u n t i n g in standard 19-inch e l e c t r o n i c rack. Same s u p e r i o r p e r f o r m a n c e a n d f a c i l i t i e s as M o d e l S R G : Basic price: $1075. M o d e l M R : M e a s u r e s a n d r e c o r d s a n y variable that can be translated into voltage or c u r r e n t or that can be time-related by synchronous drive. Forty-two spans, twelve speeds. Basic price: $2850. EHS-2-ZI3
SARGENT-WELCH Scientific instruments, apparatus, chemicals. Sargent-Welch Scientific Company 7300 N. L i n d e r A v e . ; S k o k i e , I l l i n o i s 60076 Chicago/Anaheim/Birmingham/Cincinnati Cleveland/Dallas/Denver/Detroit S p r i n g f i e l d , N.J . / T o r o n t o / M o n t r e a l / V a n c o u v e r
ANALYTICAL CHEMISTRY, VOL. 44, NO. 9, AUGUST 1972
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