salt products, salt-chemical engineering products, salt machinery equipment, brine-biotech products, marine
Bath Salt
Bath salt is produced by Salt Research Institute of China National Salt Industry Corporation, according to the composition of natural warm mineral spring by adding Chinese herbal medicine, the warm water adding the bath salt is comparable with the water from natural mineral spring. It smells fragrancy and has obvious effect. It is proved that it is safe product without side-effect.
Direction:
1.Intenerating horniness, preventing and curing dry and cracking of heel.
2. Accelerating blood circulation, reducing tiredness after sport and hard working.
3.Restraining bacteria increasing on skin, it can be essential for cure of dermatosis, rheumatism and arthritis. It can make skin smooth.
Methods:
Dissolving 50g bath salt in warm water and bathing for 20 to 25 minutes. Or dissolving 10g bath salt in 3L warm water and washing feet for 20 to 25 minutes.

Instruction of Artificial Sea Water

Applications
Versatile, for use in keeping and culturing coral, sea anemone and different kind of sea fish at aquaria.

Usage
Simply dissolving about 36kg product into 1m3 fresh water (in the proportion of 3.6%)to create instant, clean, artificial sea water that its density is between 1.020g/cm3 and 1.022 g/cm3 , PH is between 7.8 and 8.4. if requiring different salinity, only adjusting the quantity in proportion.

Notice:
1. No airing in sea water during dissolution;
2. choosing clean underground water source or pretreated tip water to create sea water.
3. keeping use in the condition of wet and cake.
4. No directly adding the solid product to aquarium that is culturing sea fish.

WYD IODINE CHECKER

1． Background
Practice has proved that adding iodine to salt is the easiest, most economical and effective way to eliminate IDD. However, it is difficult to measure the iodine content in iodized salt quickly and precisely during its production and distribution. The traditional titration method allows us to measure the iodine content accurately, but it is only suitable for lab other than salt plants. While using test paper is a prompt way, but the result is not accurate. In order to solve these problems, Salt Research Institute of China National Salt Industry Corporation developed the WYD Iodine Checker, which can be conveniently applied to iodized salt production and distribution, empowering us to measure the iodine content in iodized salt both easily and accurately.

2. Introduction of WYD Iodine Checker
2.1 Characteristics
WYD Iodine Checker is a single wavelength photometer with the function of LCD readout, zero auto calibration and concentration readout. Small bulk, reliable performance, correct measurement and make WYD Iodine Checker a remarkable user-friendly instrument.
2.2 Fundamental Principle
The fundamental principle of WYD Iodine Checker is “luminosity” principle: dissolve a certain amount of iodized salt in distilled water, then add H2SO4 (Vitriol) and KI-starch (Potassium iodide-starch)--- The solution becomes blue because blue iodine-starch compound forms. After the salt is dissolved thoroughly, use iodine checker to measure the shade of the blue color, then converted it into the content of iodine.

2.3 Specifications
Stability: Drift less than 0.3 mg/kg in 10 minutes
Measurement range: From 10 to 80 mg/kg
Readout: 0.1 mg/kg
Accuracy: analytical error is less than 2 mg/kg
Precision: Fluctuation is less than 2% (at the concentration of 50 mg/kg)
Bulk: 175×135×60 mm
Weight: 500g
Power requirement: AC 220v or DC 9v

2.4. Operation
Weight 1 gram of iodized salt in 50 ml tube, add 10 ml of distilled water, 2 ml A solution (H2SO4 , Vitriol), 2 ml B solution (KI-starch , Potassium Iodide-starch), and then add water to make 50 ml solution. Shake the tube until the salt is dissolved thoroughly. Insert the cell that contains this solution into the cell holder of WYD, the concentration is directly read on LCD.

2.5. Calibration
You can use water to calibrate to zero, and use standard test solution or use gray glass accessory to calibrate the instrument.

3. Evaluation
After having tested the WYD Iodine Checker, the Department of Chemical Engineering and Applied Chemistry of Toronto University proves: WYD Iodine Checker operates very well under the same principle as titration method, demonstrating good accuracy, precision and measurement reproducibility.
In 2000, UNICEF and the Ministry of Health of China entrusted the China National IDD Reference Laboratory to evaluate the WYD Iodine Checker. They spent 11 months to compare titration method with Iodine Checker. In addition to this, they make experiments of WYD Iodine Checker in 100 iodine labs of health sector for three weeks as well as a survey of its performance in 100 iodized salt lab of salt industry.
The evaluation result is as follows:
a. The precision of this method is a little bit lower than that of titration. The variance coefficient in batch is no more than 5%. It’s qualified for practical use.
b. When using standard material to do recovery experiments, the results are always accurate.
b. The survey among end-users indicates that 80% of users think that WYD Iodine Checker boasts good accuracy, stability, measurement reproducibility and it is easy to use and carry, so they’re willing to become permanent users.

Approved by China National Administration of Technology Supervision, We’re licensed to manufacture WYD Iodine Checkers. So far, more than 1200 Iodine Checkers have been sold to iodized salt plants, iodized salt distribution companies and public health labs in 30 provinces and municipalities in China. Apart from this, more than 30 sets have been exported to Vietnam, Burma, Nepal, Bangladesh, Korea, Greece and other countries.
We welcome all friends from world salt industry to use WYD Iodine checker.

SALT RESEARCH INSTITUTE, CNSIC
Add: 831 Yingkou Rd., Tanggu, Tianjin, 300450, P.R. China
Tel/ Fax: 0086-22-25897596
E-mail: salt-cen@starinfo.net.cn / Sri831@starinfo.net.cn