C&EN
READER
SERVICE VALID THROUGH September 10, 1973
J U N E 11 ADVIERTIS ED PRODUCTS
1 14 27 40
2 15 28 41
3 16 29 42
4 17 30 43
5 18 31 44
6 19 32 45
7 20 33 46
8 21 34 47
9 22 35 48
10 23 36 49
11 24 37 50
12 25 38 51
13 26 39 52
108 121 134 147 160 173 186 199 212 225 238 251
109 122 135 148 161 174 187 200 213 226 239 252
110 123 136 149 162 175 188 201 214 227 240 253
111 124 137 150 163 176 189 202 215 228 241 254
112 125 138 151 164 177 190 203 216 229 242 255
NEW PRODUCTS, N E W JTERATURE:
Changing titrants is a snap on a Metrohm E-436. Just snap out the old buret unit and snap in the new. The Metrohm isn't only the world's finest recording titrotor. It is also the only automatic titrator with interchangeable, snap-in buret units, and nine buret sizes,- from 0.2 ml. to 50 ml. On the E-436 you can do non-stop titrations and change titrant as often as you like. There's no need to constantly stop, disassemble and clean burets, as on instruments with dual systems. Simply replace one buret unit with another and keep right on going. But convenience isn't the only unique feature of the E-436. It provides eight mV ranges (50 mV to 200 mV), four pH ranges (1, 5, 10 and 14 pH), and 50 mV (1 pH) sensitivity per full scale deflection, the highest of any automatic titrator. Besides potentiometric and Redox titrations, the E-436 is also equipped to do amperometric and voltametric titra-
tions without any supplementary attachments. Finally, the E-436 eliminates zeroing problems by using a single motor for both buret and paper drives. Of course, the E-436 also has numerous conventional features, including automatic stop, automatic adaption of titrating speed to curve slope, a continuously variable buret delivery rate, and a very attractive price. But to learn more about the unconventional features, you really should have our catalog. For your free copy, just write: Metrohm Division, Brinkmann Instruments, Cantiague Road, Westbury, N.Y.I 1590.
r i Metrohm m Titrators
100 113 126 139 152 165 178 191 204 217 230 243
101 114 127 140 153 166 179 192 205 218 231 244
102 115 128 141 154 167 180 193 206 219 232 245
103 116 129 142 155 168 181 194 207 220 233 246
104 117 130 143 156 169 182 195 208 221 234 247
105 118 131 144 157 170 183 196 209 222 235 248
106 119 132 145 158 171 184 197 210 223 236 249
107 120 133 146 159 172 185 198 211 224 237 250
PLEASE DHECK YOUR FUNCTION:
4 • PRODUCT R&D 1 • MANAGEMENT 2 • PRODUCTION, CONTROL 5 D 13URCH., SERVICE, SLS. 3 • PROCESS DESIGN & DEV. 6 D OTHER
NAME TITLE COMPANY STREET CITY
