Kodak Module 9 Plastics Austenitic Solution Polyvinyl, Hastelloy C, Aisi Type, Bleach Persulfate

Table 9-2 Construction Materials for Process ECP-2E

	Plastics			Austenitic
Solution	(Polyvinyl
		Titanium	Hastelloy C	Stainless Steel
	Chloride or
				AISI Type 316 *
	Polyolefins)
Bleach (Ferricyanide or “UL”):
Tanks and Racks	• †	•	•
Mixing Tanks	• †	•	•
Replenisher Holding Tanks	• †	•	•
Piping, Pumps, Valves, and Filter Cores	• †	•	•
Overflow Holding Tank	• †	•	•
Bleach (Persulfate):
Tanks and Racks	• †	•	•
Mixing Tanks	• †	•	•	•	‡
Replenisher Holding Tanks	• †	•	•
Piping, Pumps, Valves, and Filter Cores	• †	•	•
Overflow Holding Tank	• †	•	•
Accelerator:
Tanks and Racks	• †	•	•		•
Mixing Tanks	• †	•	•		•
Replenisher Holding Tanks	• †	•	•		•
Piping, Pumps, Valves, and Filter Cores	• †	•	•		•
Stop:
Tanks and Racks	• †	•	•
Mixing Tanks	• †	•	•	•	§
Replenisher Holding Tanks	• †	•	•	• §
Piping, Pumps, Valves, and Filter Cores	• †	•	•
Others:
Tanks and Racks	•	•	•		•
Mixing Tanks	•	•	•		•
Replenisher Holding Tanks	•	•	•		•
Piping, Pumps, Valves, and Filter Cores	•	•	•		•

*AISI Type 316 Stainless Steel has been extensively tested and is satisfactory for the uses listed in the table above. Refer to The SPSE Handbook of Photographic Science and Engineering, Materials of Construction for Photographic Processing Equipment Section for information on other Austenitic Stainless Steels.

†Plastics compatible with low pH solutions should be used (e.g., polyvinyl chloride, polypropylene, and high-density polyethyle ne). The compatibility of other plastics should be evaluated under actual use.

‡ Short-term storage of persulfate bleach in stainless steel tanks is acceptable.

§ Provided the concentration of sulfuric acid specified for the stop is not exceeded and fresh replenisher is always used.

Process ECP-2E Specifications 9-7