This pack of 16 x 20" Bright White 8-Ply 100% Cotton Museum Board from Archival Methods contains 5 boards that are designed for matting of fine prints, precious documents, traditional and digital photography. The 8-ply boards create a 1/8" separation between artwork and glazing.

The Cotton Museum Boards are acid and lignin-free and use alkaline or neutral sizing. No brightening agents are used and no yellow cast is present. All boards are buffered with calcium carbonate to ensure that a polluted environment won't cause paper's pH value to decrease with age.

Thickness 1/8"    100% Cotton Fiber (99% Alpha Cellulose)    Acid-Free    Archival Grade    Calcium Carbonate Buffered

Made from 100% Cotton fiber pulp (99% Alpha Cellulose) and does not contain any post consumer waste recycled pulp. The paper is free of metal particles, waxes, plasticizers and residual bleach peroxide. Sulfur content is less than 0.0008% reducible sulfur. Iron content does not exceed 150 ppm and copper does not exceed 6 ppm. No optical brightening agents are used in the pulp

Alkaline sizing is used for both internal and external sizing. No alum is used in the manufacturing process

Calcium carbonate buffered with 2 to 3% alkaline reserve

Acid-free (9.0 ± 0.5 pH level)

Board passes the PAT (Photographic Activity Test) ISO 14523 (formerly ANSI IT9.16)

Lignin content is tested by TAPPI 236 cm-85 and has a Kappa number of less than five

Single ply sheets are laminated together using an all-natural starch adhesive

Related Questions and Answers

Q: 1. Is the surface smooth, like hot press, or slightly pebbly, like cold press?

A: These boards have a smooth surface.

Q: 2. These are for a dry mounting press?

A: The Archival Methods 11 x 14" 2-Ply 100% Cotton Museum Board can be used in a dry-mount press.

Q: 3. Can you please tell me how thick this is?

A: This mat board is 2-Ply / 30 Pt. (approximately 1/32) thick.

Q: 4. What does 2 ply mean

A: it means thickness - the more plys the thicker and stronger (more firm) the matt - 2 ply is very good - 4 ply is better but a lot more expensive - never had an issue with 2 ply

Q: 5. What does the empty tray weigh?

A: The empty Paterson Plastic Developing Tray for 16x20" Prints weighs approximately 1.85 lbs (0.84 kg).

Q: 6. Is the color bright white, normal white or is it a yellowish white?I'm required to get white acid free mounting board 4 ply 11x14 so I don't know if this will work for my darkroom black and white prints.Thanks!

A: I'd say it is a light cream white. It definitely fits some photos much better than the usual harsh gallery white.

Q: 7. Are these acid free?

A: Yes these would be acid free.

Q: 8. Is it for printing right on board , or is it adhesive board?

A: Thank you.

Q: 9. Can you tell me the thickness of these boards? Looking for 1/2" thickness. And are they self adhesive on 1 side?

A: They are about 1/16" of an inch thick. They are not self adhesive as that would not be considered archival grade. We have precut 13x19" https://bhpho.to/2LeKTD8 or you can cut your own.

Q: 10. Hi how many gsm is 2 ply and 4 ply?

A: 2-ply ≈ 260 g/m2 3-ply ≈ 390 g/m2 4-ply ≈ 520 g/m2