October, 1966
FISHER PRODUCT
REPORT
N e w s about instruments, apparatus and reagent chemicals your work quicker, surer, safer and easier.
that
make
Fisher Accumet® 310 ρ Η meter takes specific ion activity measurements in stride. Direct, rapid measurement of specific ion activity in aqueous solutions re quires special electrodes and an expanded-scale pH meter. The Fisher Accumet 310 fits that last bill to a "T." Its expanded mode stretches 1.4 pH or 140 mv over 7 inches, giving readings accurate to ±0.005 pH or ±0.5 mv. The 1.4-pH ranges begin at any integral value, overlap so most readings can be made to ±0.002 pH or ±0.2 mv near midscale. It has a logarithmic scale as well as the usual 0 - 14-pH, 0 to ± 1400-mv scale. Paral lax is eliminated; response is fast; circuits are drift-free; there is inde pendent zeroing in all functions and a locking device on the "standardize" control; there is even a test circuit to spot errors when readings are ques tioned. Cost: $595. For the special electrodes, we suggest the Orion cal cium ion activity, divalent cation ac tivity and the new fluoride activity electrodes. We're ready to mail help ful literature on the Orion electrodes and on our Accumet 310. (a) D
New Fisher electrode brakes electrolyte leakage. In the realm of slow-flow electrodes, we honestly don't think there's a slower one than our new dual-glass junction, general-purpose reference electrode (catalog #13-639-57). Its flow rate is a snail's-pace 0.5 to 3 microliters per hour at 8.0-cm head. It's particularly suited for continuousprocess applications where you can't tolerate frequent refilling of the elec trode or permit diluting of the ionic concentration. Price: $20.00. It is made, tested and guaranteed by Fisher, like all of its kindred. Just say so, and we'll send you our family-al bum brochure. (b) Π
For the accurate measurements possible with advanced pH meters, these Fisher buffers let you standardize in the range near where you'll work. Per Pt So-B-96 So-B-98 So-B-104 So-B-108 So-B-112 So-B-116
Buffer, Buffer, Buffer, Buffer, Buffer, Buffer,
pH 2.00 pH 4.00 pH 6.00 pH 7.00 pH 8.00 pH 10.00
5 Gal Per Qt PolyPac™
$2.50 $4.50 2.75 4.50 2.50 4.50 2.75 4.50 2.50 4.50 2.75 4.50
$20.00
—
20.00 20.00 20.00
In addition to these ready-to-use solutions, certified accurate to ±0.02 pH, we stock buffer concen trates, buffer saits and buffers for bringing a sample to a specific pH. Full details on all are in our brandnew brochure, "Fisher Certified Buf fers." Make it part of your techni cal library. (c) •
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LITERATURE?
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