W-l-D-E-S-T Test Range! Easiest to Use! BAUSCH & LOMB
Unlike ordinary colorimeters which are limited to the wavelengths of a few selected filters, the Bausch & Lomb Spectronic 20 gives you accurate readings at any wavelength in the 34θιημ,-950ιημ, range. And it's easy as tuning your radio!
New! W ·
Six separate procedures, completely detailed, for quick, easy, dependable analysis of alu minum. $ 5 each; set of six, $ 2 0 . Information on methods for analysis of other materials, on request, without charge.
New!
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Easiest Ever! Dial instantly sets Certified-Precision grating to desired wavelength; no color niters to fuss with.
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Dependable Accuracy! Narrow band pass (only 20ηΐμ,! ) assures highest spectral purity.
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Fastest Readings! Instant-acting meter gives exact percent transmission, or optical density.
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Low Price, Double Value! Colorimeter plus spectrophotometer, 375ιτΐμ,-950πΐμ, (extended range to 34θπΐμ, at slight extra cost), for less than the price of most colorimeters alone!
INDUSTRIAL METHODS MANUALS
E-X-T-E-N-D-E-D RANGE
Special a d a p t a t i o n , increasing instrument range to 340πΐμ in the U-V, permits added use for new tests, new applications. Vitamin as says, for e x a m p l e , are now routine laboratory procedure with low-cost, effort-saving B&L Spectronic 2 0 Colorimeters.
BAUSCH & LOMB OPTICAL CO. 60916 ST. PAUL ST., ROCHESTER 2 , N. I
I Send me B&L Spectronic 20 Catalog D-266.
I
| Send me enclosed, $..
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aluminum analysis methods; payment ($5 each; set of 6, $20).
I would like an obligation-free demonstration of I he B&L Spectronic 20 Colorimeter at my convenience.
BAUSCH & LOMB
NAME TITLE
SINCE
1853
COMPANY ADDRESS .. CITY
. ZONE
STATE
America's only complete optical source... from glass 1o finished product.
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