ti al li st:ry
SΕ ΡΤ Ε IYIBIEl\ 196 8
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
10 1 10 2 103 104 10 5 10 6 10 7 10 8 109 11 0 11 1 112 113 114 115 11 6 11 7 118 11 9 120 12 1 12 2 12 3 124 12 5
126 127 128 12 9 13 0 13 1 13 2 13 3 13 4 13 5 13 6 13 7 138 139 14 0 14 1 14 2 143 14 4 14 5 114 6 114 7 114 8 114 9 115 0
15 1 152 153 15 4 15 5 15 6 15 7 158 159 160 16 1 16 2 163 164 165 166 16 7 168 169 0 1 2 3 4 5
1I76 1I77 1I78 1I79 I80 1181 1I82 I83 I84 I85 1I86 I87 I88 I89 I90 191 I92 I93 I94 1I95 I96 I97 I98 1I99 ?00
201 202 203 204 205 206 207 208 209 2 10 2 11 2 12 2 13 2 14 2 15 2 16 2 17 2 18 2 19 220 221 222 223 224 225
251 252 2 53 2 54 2 55 2 56 2 57 2 58 259 260 261 262 2 63 264 265 2 66 267 268 269 270 2 71 2 72 273 274 275
276 277 2 78 2 79 2 80 281 282 283 284 285 286 2 87 288 289 290 291 292 293 294 295 296 297 298 299 300
301 302 303 3 04 305 306 307 308 3 09 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 32 0 32 1 32 2 3 23 324 32 5
Zip-
11 blackstone street
New York, Ν. Υ.
advt. products I've circled above:
226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 2 50
Address—
Company-
Position—
Name
orion research incorporated
hav e an imme d iate uise for tl*ese
51 76 52 77 53 78 54 79 55 80 56 81 57 82 58 83 59 84 60 85 61 86 62 87 63 88 64 89 65 90 66 91 67 92 68 93 69 94 70 95 71 96 72 97 73 98 74 99 75 100
L IT ElR ATUI RIΕ 4 12 t11 3 4 14 4 1 5 412 7 42 8 ti:29 430 4 4 2 44 3 444 4·4 5 511 2 I51 3 1514 5 15 6i! 2 I51 3 I6 14 6 15 6!27 I52:8 IB:29 6 30 614 2 154 3 IS'14 64 5
Vali d 1 iro ugl e b. 196 9
Cu
RU SH
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 20 21 22 23 24 25
A,D VEIR TlISED PROIDUC Τ S
NE W ΡR 0>DIUCTS, ΝIEW 1CHEM ICA LS, MFG 4 01 4 02 4 03 404 40Ei 406 407 408 4091 4-10 41 1 ï 4215 4 16 4 17 4 18 419 42CI 421 422 423 4241 421 4 31 4 32 4 33 434 43Ei 436 437 438 4391 440 44 1 501 502 503 504 50Ei 506 507 508 509I 5'II3 51 1 601 602 603 604 60Si 606 607 60« 609I 6 II3 61 1 616 617 618 619 62C1 621 622 623 624I 62!5 62!S 631 632 633 63 4 635i 636 63 7 638 63916413 64 1
A C
CrNOrBrrCIOrCa + + S = Ag+Pb + + CN-F-
now...
++
New solid membrane electrode measures total copper down to 1CT8 M (1 ppb), free cupric ion in presence of copper complexes to10" 2 0 M.
Save up to $16 a crack
Still another new specific ion electrode from Orion
Model 94-29 cupric ion electrode available from leading laboratory supply dealers Cambridge, mass. 02139
Circle No- 72 on Readers' Service Card
FIRST C L A S S Permit No. 1538
New York, Ν. Υ.
NO POSTAGE STAMP NECESSARY IF MAILED IN THE UNITED STATES
BUSINESS REPLY CARD
POSTAGE WILL BE PAID BY
...with Coleman Replaceable Reservoirs
ANALYTICAL CHEMISTRY
430 Park Avenue
10022
Only Coleman has them ! When you crack the reservoir on a Coleman Reference Electrode, you re place only the reservoir. Our Replace able Reservoirs cost just 25% of what you'd pay for a complete new electrode. You'll save $12, $14, $16 at a crack; and you'll get readings as precise and accurate as ever. Convert to new Coleman Electrodes now, no matter what kind of pH meter you own. A complete listing of 10 differ ent Reference Electrodes is available; and you get the added advantage of a Tri-Purpose Glass Electrode, covering general-purpose, high-temperature, and high-alkaline work.
Send for Bulletin
Write to Coleman Instruments Division, The Perkin-Elmer Corporation, 42 Madison St., Maywood, Illinois 60153
136 A
·
A-289
PERKIN―ELMER
Circle No. 105 on Readers Service Card
ANALYTICAL CHEMISTRY
