Resin and Solvent Storage

resin life terms date of manufacture (dom) the date on which a material is first produced, as recorded in the batch record and stated on coa/coc shelf life the length of time that a properly packaged and stored material will last without undergoing physical or chemical changes shelf life = expiration date – dom expiration date the last day on which a material should be used end of carbon’s guarantee of product performance according to specification sell by date the last day that a product can be scheduled to ship to the customer to ensure adequate minimum shelf life (shipments can be made past the sell by date if sales ops communicates to the customer and they are willing to accept a shorter shelf life) minimum shelf life the amount of shelf life remaining when the product is shipped typically carbon resin products are sold with a minimum shelf life of six months, but there are exceptions (for example, dpr 10 has a minimum shelf life of 3 months) consult the protocol sheet for each resin to see the minimum shelf life minimum shelf life most carbon resins have a minimum shelf life of 6 months the exceptions are dpr 10 3 months epu 44 3 months epu 46 black part a 3 months epu pro 70 expand 3 months bulk quantities of epu resins (epu 42, epu 43, epu 44, epu 46 black, epu 46 color base) are made to order contact carbon for the minimum shelf life of these resins resin storage resins are designed to be chemically altered by uv light and must be stored properly to maintain viability store resins in a climate controlled area that is isolated from any possible source of uv light we recommend a dark cabinet with locking doors in an area maintained at 17 25 °c (64 77 °f) failure to store resins as instructed can lead to compromised material properties and print defects check the certificate of conformity for the latest expiration information expiration dates on the bottles are the earliest possible expiration at the time of shipping and may be extended from time to time please check the certificate of conformity to see if your resin bottle has a later expiration date storage temperature exceptions epx resins require refrigeration at 4° c for long term storage (up to 12 months) epx 82 stored without refrigeration only has a shelf life of 1 month epu resins and rpu 130 are prone to crystallizing at lower temperatures, so we recommend storing these resins in a higher temperature range, especially after the cartridge has been partially used reference the protocol sheet for the each resin for storage temperature range storage cabinet this cabinet specification is a recommendation based on typical applications you should assess your own resin consumption rate and adjust your storage capacity accordingly specifications measurement (metric) measurement (imperial) cabinet dimensions (w × d × h) 0 46 × 0 89 × 1 14 m 35 × 18 × 45 in resin containers see the table below for the dimensions of the resin containers specifications vol (ml) measurement (imperial) measurement (metric) one part resins (w × d × h) 800 4 × 5 × 10 in 12 6 × 15 7 × 31 4 cm two part 10 1 resins (w × d × h) 400 3 5 × 2 75 × 9 in 8 9 × 7 0 × 22 9 cm two part 1 1 resins (w × d × h) 375 3 5 × 1 75 × 9 in 8 9 × 4 4 × 22 9 cm best practice dictates that our resins are stored in the original labeled shipping box until ready for use the resin boxes that hold the containers are the following sizes specifications measurement (imperial) measurement (metric) 3200 ml drainback 5 7/8 × 6 13/16 × 12 1/2 in 14 9 × 17 3 × 31 8 cm boxes of two 375 and 400 ml cartridges 4 × 10 × 13 in 10 2 × 25 4 × 33 0 cm when cartridges or bottles are removed from their box, the best practice is to keep resins in secondary containment containers ( accessories & supplies docid 95twe3ttl 5ihi6dnl4xi ) to prevent the spread of liquid resin residue see safety docid\ eplnolhpoetra wxrrpjd for information on the proper disposal of liquid resin solvent storage the most common solvents used in dls production are ipa (isopropanol, isopropyl alcohol) and acetone ipa purity>= 99% isopropanol | cas 67 63 0 acetone purity 100% | cas 67 64 1 these solvents are widely available and can be purchased at the supplier of your choice these can also be found on accessories & supplies docid 95twe3ttl 5ihi6dnl4xi flammable solvent storage use a flammable storage cabinet to store the flammable solvents used in dls production isopropyl alcohol (ipa or isopropanol) acetone storing washtubs with solvent inside a secondary container is also advised within the flammable cabinet specification measurement (imperial) measurement (metric) flammable cabinet dimensions (w × d × h) 22 × 35 × 35 in 0 56 × 0 89 × 0 89 m fluid capacity 22 us gallons 83 l see safety docid\ eplnolhpoetra wxrrpjd for information on the proper disposal of liquid resin other solvent storage not for use in aligner model production solvents with a flammability value less than 3 can generally be stored outside of a flammable cabinet these solvents used with dls processes have low flammability values pg | propylene glycol vf 1 | previously referred to as custom vertrel™ solvent blend, ms 767 3d 13 dpm | 99% di(propylene glycol) methyl ether daa | diacetone alcohol store all solvents and washtubs with solvent inside a secondary containment vessel always check with local regulations for solvent storage requirements solvents used in dls with low flammability values propylene glycol (pg) cas 57 55 6 propylene glycol is a general availability solvent that may be purchased from your supplier of choice a supplier link is provided in the accessories & supplies docid 95twe3ttl 5ihi6dnl4xi for your convenience vf 1 vf 1 is a custom solvent blend that must be purchased through the supplier provided in accessories & supplies docid 95twe3ttl 5ihi6dnl4xi this blend was previously referred to as custom vertrel™ solvent blend, ms 767 3d 13 dipropylene glycol methyl ether (dpm) 99% dipropylene glycol methyl ether | cas 34590 94 8 dpm is a general availability solvent that may be purchased from your supplier of choice suggested supplier links per region are provided in accessories & supplies docid 95twe3ttl 5ihi6dnl4xi for your convenience diacetone alcohol (daa) diacetone alcohol cas 123 42 2; 99+% purity daa is a general availability solvent that may be purchased from your supplier of choice suggested supplier links per region are provided in accessories & supplies docid 95twe3ttl 5ihi6dnl4xi for your convenience