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MATERIAL STORAGE
Prior to actual use of the material, read the Material Safety Data Sheet / Safety Data Sheet (MSDS/SDS) for the material(s) that

you have selected; follow the instructions and guidelines that those documents provide.
Print materials should be stored in the opaque, non-reactive containers in which they were provided, according to the

guidelines given in the MSDS/SDS included with the print material and all applicable regulations (local, state, and federal).
Protect print material from sunlight and ambient room light. Print material may be stored in material carts with the lid securely

fastened. Material for the SLA 750 is composed of reactive monomers and oligomers. If improperly stored or handled, these

compositions may undergo polymerization resulting in the emission of heat.
Improperly stored resins may increase in viscosity, and eventually result in a gelled, polymerized product in the storage

container. Materials should be stored in conformance with applicable laws and regulations. 3D Systems is not responsible for

losses incurred as the result of improper storage of print material. See subjects of Light and Temperature below.

Light
Photocurable materials should be shielded from sunlight or other sources of actinic radiation such as fluorescent or mercury

vapor lights. Exposure to UV radiation leads to an increase in product viscosity and eventually to product polymerization,

rendering the material unusable for part printing.

Temperature
Containers of print material should be kept indoors at temperatures between 16 ºC (60 ºF) and 27 ºC (80 ºF). Temperatures

above 27 ºC (80 ºF) may accelerate the depletion of the stabilizers contained in the product. Once the stabilizers are exhausted,

the product may undergo polymerization, rendering it unusable for part printing.

Containers
Print materials for the SLA 750 are shipped in polypropylene containers. Polyethylene containers or liners are acceptable

for storage also, as long as they are opaque to ultraviolet light, and not used to hold solvent containing materials. Plastic

containers made from organic solvent soluble materials such as polystyrene or polyvinylchloride (PVC) should not be used for

material storage.
Print materials containing acrylates should not be allowed to come into contact with iron and copper, or alloys containing

copper to insure product stability. Container lids should be tightly sealed in order to protect the product from contamination

and/or stray light when not in use. Also, a tightly sealed container is less likely to cause spillage if accidentally dropped during

handling. You should consult the applicable literature for proper storage, use and handling of photocurable materials.

Shelf Life
Accura and AMX materials are certified for use for at least 12 months from their date of manufacture. Most materials are

certified for 18 months from their manufacture dates. The recertification dates are marked on the material cartridge labels. In

general, resins are usable for several months after their recertification dates provided that the materials have been properly

stored, handled and not exposed to excess heat. However, use of very old or material past its recertification date may shorten

your In-Service material life. It is advisable to check the viscosity of any material past its recertification date prior to use.

In-Service Life
In-service life of the print materials is defined as the useful life of the material after having been poured into the SLA 750 Vat.

The in-service life of the SLA 750 material greatly varies depending on material type, usage and environmental conditions. The

more volume printed, the more the material is refreshed with newer material. This blends older material with newer material

and extends the in-service life of the materials. If the material is exposed to temperatures outside of the normal operating

limits, is exposed to UV light, is exposed to particulates or vapors in the air such as dust or fumes, or if contaminates are

introduced such as partially cured platforms being placed back into the vat, this will shorten the material in-service life. The type

of patterns and prints performed also affect the in-service life of the material. With all this taken into consideration, we would

expect the in-service life of the material to be at least two years but can be much longer with proper care and maintenance. The

material retains its usefulness until a buildup of viscosity or a change in reactivity prevents further processing in the SLA 750.

Contamination
Care should be taken when cleaning windows, panels, platforms and other parts of the SLA 750. Cleaning products which

contain ammonia should not be used because they can cause contamination of the material. Instead, use a small amount of

isopropyl alcohol on a paper towel to clean up spills. Accidental contamination of resins may change the material's performance

characteristics to such an extent that acceptable parts can no longer be reliably created.