| KEM
Product |
| Evaporator for
Oil Samples |
|
ASTM D6304 Test Method for Determination of Water in Petroleum
Products, Lubricating Oils, and Additives by Coulometric Karl
Fischer Titration |
|
An aliquot is injected into the titration vessel of
a coulometric Karl Fischer apparatus in which iodine for the Karl
Fisher reaction is generated coulometrically at the anode. When all
of the water has been titrated, excess iodine is detected by an
electrometric end point detector and the titration is terminated.
Based on the stoichiometry of the reaction, 1 mol of iodine reacts
with 1 mol of water; thus, the quantity of water is proportional to
the total integrated current according to Faraday’s law. |
|
The sample injection can be done either by mass or
volume. |
|
The viscous samples can be analyzed by using a water
vaporizer accessory that heats the sample in the evaporation
chamber, and the vaporized water is carried into the Karl Fischer
titration cell by a dry inert carrier gas. |
|
EN ISO
12937 Petroleum products -- Determination of water -- Coulometric
Karl Fischer titration |
|
ADP-513 |
- The evaporator provides moisture
titration by indirect method without the necessity of
solvent, and enables consecutive measurement without
discarding wastes after each run.
- The transparent evaporation bottle
offers visible progress in the sample within the bottle.
- Precise and stable control of
temperature is assured by PID thermal control.
| Heating Method |
Cartridge base heater |
| Temperature range |
Room to 200℃ |
| Temperature control |
PID control by CPU |
| Gas flow rate |
100 to300mL/min |
|
|
MKC-520 |
ASTM D6304 Test Method for Determination of Water in Petroleum
Products, Lubricating Oils, and Additives by Coulometric Karl
Fischer Titration
Procedure A (by Mass) & Procedure B (by
Volume) |
|
MKC-520+ADP-513 |
ASTM D6304 Test Method for Determination of Water in Petroleum
Products, Lubricating Oils, and Additives by Coulometric Karl
Fischer Titration Procedure
C (Water Evaporator Accessory)
|
|
