ChemTron VTR-80高低温磁力搅拌反应装置

Potentiometric determination of silver in silver or alloys. After dissolving in concentrated nitric acid the sample is titrated with NaCl (or KBr) or HCl using a silver combination electrode.

Determination of the exact concentration of the HCL titrant We recommend ready to use HCl titrant. The exact concentration of the HCL 1.000 mol/l can be determined using the titrimetric standard Tris hydroxy amino methane (TRIS). The standard can be dried for 24 h in an exsiccator at room temperature. 1-2 g of the standard are weighed accurately in a 150 mL beaker and dissolved in 80 mL of dist. water with stirring. It is titrated with the 1 mol/l HCl solution. Repeat the standardization two times. The average value is stored automatically in the exchangeable unit.

The application describes the procedure of the coulometric water determination in petrochemistry products such as mineral oil and similar products. The application note describes only the direct titration and not the use of evaporation oven.

This method is a general description how to determine the water content in organic liquids such as methanol, isopropyl alcohol, glycol and other similar liquids.

Determination of the exact concentration of the HCL titrant We recommend ready to use HCl titrant. The exact concentration of the HCL 1.000 mol/l can be determined using the titrimetric standard Tris hydroxy amino methane (TRIS). The standard can be dried for 24 h in an exsiccator at room temperature. 1-2 g of the standard are weighed accurately in a 150 mL beaker and dissolved in 80 mL of dist. water with stirring. It is titrated with the 1 mol/l HCl solution. Repeat the standardization two times. The average value is stored automatically in the exchangeable unit.

The application describes the procedure of the coulometric water determination in petrochemistry products such as mineral oil and similar products. The application note describes only the direct titration and not the use of evaporation oven.

根据DIN 38 406 - E 3-3标准检测海水、饮用水、地下水的总硬度，如果废水中的金属离子含量不高，也可以用来检测废水的硬度。

200 ml sample (measuring cylinder; for chlorine concentrations > 2 mg/l use less sample and fill up with dist. water to 200 ml) are filled into a 250 ml beaker. Add 1 ml KI solution and 1 ml buffer solution pH = 4.0 and titrate with the phenylarsine oxide to an equivalence point (potentiometry) or μA endpoint (amperometry)

Titrator: TL 6000-M2/20 or TL 7000-M2/20 consists of ? Basic device ? Magnetic stirrer TM 235 ? 20 mL exchange unit WA 20, with brown glass bottle for titrant complete ? pH combination electrode with integrated temperature sensor (A 162 2M-DIN-ID, N 1052 A, BL 18…)

This method is used for the quantitative determination of total hardness in drinking water. The total hardness is the sum of calcium and magnesium hardness. It is possible to titrate the Ca- and Mg hardness with a Ca-ISE electrode as two equivalence points (EQs) in one titration. But it is recommended to use the more robust Cu-ISE for the determination of total hardness

Determination of basic constituents in petroleum products by potentiometric titration with perchloric acid in glacial acetic acid. The total base number (TBN) is the quantity of perchloric acid, expressed in terms of equivalent number of milligrams of potassium hydroxide (or alternatively in milli-equivalents of hydroxide per gram), that is required to neutralize all basic constituents present in 1 g of sample when titrated under the prescribed conditions.

Determination of acidic constituents in petroleum products and lubricants by potentiometric titration. The total acid number TAN is the quantity of base, expressed in milligrams of potassium hydroxide, that is required to neutralize all acidic constituents present in 1 g of sample.

The peroxide number gives the initial evidence of rancidity in unsaturated fats and oils. Other methods are available but peroxide value is the most widely used. It gives a measure of the extent to which an oil sample has undergone primary oxidation.

The method is suitable for samples which contents nitrate or protein. The sample is digested with sulfuric acid in the presence of a catalyst. This converts organically bound nitrogen to ammonium sulfate. In a distillation apparatus the digestion solution is treated with NaOH and the released ammonia (NH3) is distilled into a solution of boric acid. This solution is then titrated with an acid titrant (HCl or H2SO4) to a pH endpoint of 4.65.

Electrode handling If not in use, the electrolyte should be stored in the electrolyte solution. For further details, please refer to the electrode’s operating instructions.

In the 100 mL glass beaker (tall form) are added 50 ml of the NaOH 0.1 m solution + 1 ml of a 5 % dispersing agent solution. The titration head is placed on the beaker and the solution is then purged with nitrogen for 5 minutes. To this solution are then pipetted 5 or 10 ml of the Indigo sample solution. Load the suitable method and start the titration.

本实验由茶叶试样中的有机磷、有机氯、拟除虫菊酯类农药经加速溶剂萃取仪用乙腈十二氯甲烷提取，提取液经溶剂置换后用凝胶渗透色谱）（GPC）净化、浓缩后，用气相色谱-质谱仪进行检测，选择离子和色谱保留时间定性外标法定量。

The application describes the procedure of the coulometric water determination in vegetable oil products such as olive-, sunflower or similar vegetable oil.

This method is used for the quantitative determination of total acidity in wine and most. The total acidity is calculated as g/L tartaric acid.

This method is used for the quantitative determination of total acidity in wine and most. The total acidity is calculated as g/L tartaric acid.

This application note descripe the titration procedure with iodine solution.

Determination of saponification number in fats and oils, fatty acids, resins and other organic technical solvents. The saponification number is expressed as the quantity of mg KOH that is required to saponificate 1 g of sample.