30
Thermometric Titration Implemented in OMNIS
As universal as it may be, potentiometric titration is not a silver bullet: Highly aggressive media or heavily contaminated samples can quickly destroy a potentiometric sensor making it impossible to follow the chemical reaction in the sample solution and accurately determine the titration endpoint. Thermometric titration can often be the solution for measuring such samples; and this titration mode has now been implemented in OMNIS, the universal platform for titration by Metrohm.
Every titration reaction is either exothermic or endothermic. The temperature changes as the titrant and analyte react. When all the analyte has been reacted, a difference in the rate of temperature change indicates the endpoint.
Hence, thermometric titration follows the titration reaction and determines the endpoint using a thermometer with a very short response time and high resolution: The dThermoprobe from Metrohm has a response time of just 0.3 seconds and can measure temperature changes as small as 0.00001 degrees Kelvin. The endpoint of the titration is registered when the titration reaction has stopped and with it any change in temperature of the sample solution.
Customers can choose between a dedicated thermometric OMNIS Titrator or add the thermometric titration mode to any existing potentiometric OMNIS Titrator. For higher sample throughput, automation is possible utilising the OMNIS Sample Robot for unattended analysis of up to 175 samples at up to four dedicated workstations.
Typical application examples for thermometric titration are the determination of acid number in petroleum products (as per ASTM D8045), the phosphate or sulphate content in liquid fertilisers, or sodium content in foodstuffs. The advantages of thermometric titration in a nutshell:
• Fast – results within a minute
• Robust (HF resistant sensor) and therefore highly suited for aggressive media and heavily contaminated matrices (e.g., hydrocarbons, acid mixtures) • One sensor for all applications • No sensor calibration needed
• No sensor maintenance required (no diaphragm, no membrane, no electrolyte, sensor can be stored dry)
More information online:
ilmt.co/PL/M8vo and
ilmt.co/PL/v1lm 60178pr@reply-direct.com
Improved Identifi cation Capabilities for Fentanyl and Other Illicit Drugs
Metrohm is pleased to announce a substantial upgrade to the illicit library. The company now has one of the most comprehensive drug libraries available on any Raman system, including hundreds of fentanyl analogues and novel psychoactive substances (NPS). All spectra were collected by Metrohm experts on Metrohm instruments. The Illicit and General Materials Library will improve material ID and make all Metrohm’s Raman products more effective screening tools.
The Illicit and General Materials Library contains a wealth of new data that will appeal to users in broad industries. This library features over 2,500 spectra for narcotics and common chemicals. It signifi cantly improves accuracy of matching and analysis of mixtures.
This is a comprehensive, up-to-date, high-resolution library for drug identifi cation. It includes NPS and illicit, narcotic, prescription, and over-
the-counter drugs. The inclusion of familiar substances supports identifi cation of commonly encountered materials and provides intuitive results for every user.
We have fl exible options to meet your needs- from extensive drug libraries to trace detection, from high-resolution to the smallest handheld systems on the market. The Metrohm Illicit and General Chemicals Library will help every user get more out of their Raman system.
Metrohm’s new and expanded library enables faster, more accurate, and more intuitive materials ID. More information online:
ilmt.co/PL/m1Av and
ilmt.co/PL/BKZ9
60180pr@reply-direct.com
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86 |
Page 87 |
Page 88 |
Page 89 |
Page 90 |
Page 91 |
Page 92 |
Page 93 |
Page 94 |
Page 95 |
Page 96 |
Page 97 |
Page 98 |
Page 99 |
Page 100 |
Page 101 |
Page 102 |
Page 103 |
Page 104 |
Page 105 |
Page 106 |
Page 107 |
Page 108 |
Page 109 |
Page 110 |
Page 111 |
Page 112 |
Page 113 |
Page 114 |
Page 115 |
Page 116 |
Page 117 |
Page 118 |
Page 119 |
Page 120 |
Page 121 |
Page 122 |
Page 123 |
Page 124 |
Page 125 |
Page 126 |
Page 127 |
Page 128 |
Page 129 |
Page 130 |
Page 131 |
Page 132 |
Page 133 |
Page 134 |
Page 135 |
Page 136 |
Page 137 |
Page 138 |
Page 139 |
Page 140 |
Page 141 |
Page 142 |
Page 143 |
Page 144 |
Page 145 |
Page 146 |
Page 147 |
Page 148 |
Page 149 |
Page 150 |
Page 151 |
Page 152 |
Page 153 |
Page 154 |
Page 155 |
Page 156 |
Page 157 |
Page 158 |
Page 159 |
Page 160 |
Page 161 |
Page 162 |
Page 163 |
Page 164 |
Page 165 |
Page 166 |
Page 167 |
Page 168 |
Page 169 |
Page 170 |
Page 171 |
Page 172 |
Page 173 |
Page 174 |
Page 175 |
Page 176 |
Page 177 |
Page 178 |
Page 179 |
Page 180 |
Page 181 |
Page 182 |
Page 183 |
Page 184 |
Page 185 |
Page 186 |
Page 187 |
Page 188
