Salt Spray Equipment shall be used to conduct Neutral Salt Spray test as per ISO 9227, ASTM B
117, MIL A 8625, MIL STD 1312, MIL STD 202 101 on uncoated and coated substrates and hence
Designed essentially to meet the following conditions.
1. Cabinet capacity A minimum of 400 litre to a maximum of 600 litre so as to accommodate
Multiple number of 50 mm width, 255 mm height, 1 mm thickness size samples
2. Unit should be a floor standing type
3. It should be constructed with fibre or glass reinforced plastic with polypropylene, duran
Glass and PVC parts with necessary thermal insulation and wall or floor mounted heater mats for
Uniform temperature inside the cabinet.
4. Cabinet roof should have transparent window and interior illumination with a push button
Switch on the control panel for illumination control or with any suitable system for illumination.
5. The system should have automatic cabinet opening system orsystem should have door
Interlock to prevent opening of chamber before full purging.
6. Temperature range for operation Adjustable from ambient to 50 Deg. C.
7. Temperature inside the cabinet during operation of Neutral Salt Spray test should be 35
Plus or minus 2 Deg. C.
8. Salt solution reservoir capacity minimum 100 litre capacity reservoir with transparent
Front or sight glass with necessary fitting and filters.
9. Salt solution atomizer to be made out of inert material like glass or plastic and to be
Mounted on adjustable swing arm for position adjustment to suit, size and shape of test coupons.
Baffles to be provided wherever necessary.
10. Sample racks to be provided as per various standards specified. Removable slotted sample
Racks, Qty. 6 Nos, to be provided. The slot angles for keeping specimens shall be 6 degree to
Vertical on one side and 15, 30 degree to vertical on opposite side.
11. Average rate of collection of salt spray solution: Graduated salt fog collection facility with
Flow meter adjustable to collect 0.5 ml to 2.5 ml solution per hour for a horizontal collecting area
Of 80 cm2.
12. Air humidifier/saturator: Air saturator shall be provided to humidify air, 95 to 100 percent
RH, before entering atomizer. Air saturator should be provided with low water and over
Temperature protector.
13. Air purge facility to be provided for quick and safe exhaust of salt fog from the cabinet,
Prior to opening.
14. Cabinet temperature and air saturator temperature to be displayed on touchscreen
Display with a resolution of 0.1 Deg. C. Calibration certificate for cabinet temperature controller to
Be provided.
15. The equipment should have built in colour touch screen display with ease of programming
Of test standards.