Sri Aurobindo Handmade Paper

Established 1959, Pondicherry, India

Manufacturer and Exporter of Fine Cotton Paper & Handcrafted Stationery

Archival Paper & Board

Technical Notes

Below are answers to common technical questions about our archival paper & board.

Our range

  1. What is this paper and board used for?
  2. What is your paper and board made from?
  3. What size is your paper and board?
  4. Is your paper available in a roll?
  5. What colours do you make?
  6. What thicknesses (grades) do you make?
  7. Do you make buffered paper or boards?

Raw materials and chemistry

  1. What materials are used in your archival paper?
  2. Is your paper lignin-free?
  3. Where do the cotton fabric offcuts used in your paper come from?
  4. How do you ensure the quality of the raw material used in your paper?
  5. How do you ensure the cotton fabric offcuts are free from the additives which are commonly used in the garment manufacturing industry, such as optical brighteners, anti-bacterial, or hydrophobic additives?
  6. How do you ensure the quality of the water used in your manufacturing process?
  7. Does your water contain any heavy metals which could impact the permanence of your paper?
  8. Are there any additives in your papermaking process that could affect long-term preservation?
  9. Do your products contain an alkaline reserve (buffer)? If so, what is the buffering agent and its percentage by weight?
  10. What is the purpose of buffered paper and board?

Performance & compliance

  1. How well does your paper and board withstand typical handling and storage?
  2. What is the lifespan of your paper and board in typical storage conditions?
  3. What is the folding endurance and tearing resistance of your paper and board?
  4. How do your products perform with various writing and printing media commonly used in archives (e.g. pencil, ink, digital printing)?
  5. Will there be variation in your papers and boards between batches?
  6. What quality control measures are in place to ensure consistency across batches?
  7. Do your products meet recognised international archival standards such as ISO 11108 (permanence and durability), ISO 9706 (permanence), and ISO 18916 (photographic activity test)?
  8. Are you able to provide samples for independent testing or evaluation before a large purchase?
  9. Can you provide detailed technical data sheets for your papers and boards?
  10. Are there examples of your paper and board being used for preservation in active archives?

Product range and customisation

  1. Do you have a standard catalogue of archival products, such as folders, sleeves, and boxes?
  2. Do you offer custom cutting or scoring for specific archival products (e.g. for pre-scored folders)?
  3. Do you offer custom box making?
  4. Is your board suitable for creating self-supporting boxes?

Placing an order

  1. Do you have a dedicated technical support contact who can answer technical archival questions or provide guidance?
  2. How can I place an order?
  3. How are your products packaged to maintain their quality during transit?

Our range

What is this paper and board used for?

Our range of archival paper and board is suitable for archival storage.

What is your paper and board made from?

Our archival paper and board is made from 100% cotton and are naturally acid-free.

What size is your paper and board?

Our archival paper and board is available in Imperial, which measures 22" x 30" (56 cm x 76 cm).

Is your paper available in a roll?

Each sheet is lifted individually by hand using traditional papermaking techniques on a hand mould and so therefore they are not available on a roll.

What colours do you make?

Our range of archival paper and board is only available in white.

What thicknesses (grades) do you make?

Our archival paper and board is available to order online in Imperial size in the following grades:
- 90 gsm
- 110 gsm
- 210 gsm
- 320 gsm.

Thicker grades are available but are subject to availability, please e-mail us for further details:
- 420 gsm
- 540 gsm
- 640 gsm
- 750 gsm
- 850 gsm
- 1,000 gsm.

Due to the handmade nature of our papermaking, these weights are approximate and are subject to inherent variance, e.g. a 110 gsm sheet can be between 110 and 140 gsm.

Do you make buffered paper or boards?

Yes, our archival paper and board range includes a buffered variant which contains 4% calcium carbonate (CaCO₃).

Raw materials and chemistry

What materials are used in your archival paper?

Our archival paper and board constitutes the following:

  • 100% cotton fabric offcuts
  • Starch for bonding the cotton fibres, adding stiffness and rigidity
  • Talcum powder to aid smoothness
  • A pH-neutral sizing agent for hydrophobicity

Finally, the range of buffered paper contains calcium carbonate (CaCO₃) at 4%.

Is your paper lignin-free?

Our paper is made from 100% cotton fibre which is naturally lignin-free.

Where do the cotton fabric offcuts used in your paper come from?

The cotton fabric offcuts used in our papermaking is procured from select garment manufacturing units in Tiruppur, Tamil Nadu. Only new and white rag offcuts are accepted for our papermaking.

How do you ensure the quality of the raw material used in your paper?

The cotton used in our paper is procured from select manufacturing units which then undergo stringent quality checking and sorting before being used to make our paper. All other raw materials used in our papermaking are procured from reputable and reliable suppliers.

How do you ensure the cotton fabric offcuts are free from the additives which are commonly used in the garment manufacturing industry, such as optical brighteners, anti-bacterial, or hydrophobic additives?

Before being used for papermaking, the cotton fabric material is boiled to help remove any additives which may have been present. However, as the cotton material is white, it is likely that optical brighteners are present. We are working with our supplier to procure cotton without optical brighteners.

How do you ensure the quality of the water used in your manufacturing process?

Our water undergoes several stages of filtering before being used in the papermaking process.

Does your water contain any heavy metals which could impact the permanence of your paper?

The water used in our papermaking does contain calcium and magnesium. These compounds are considered beneficial to archival paper as they contribute to the alkaline reserve, helping avoid acid-induced deterioration.

Are there any additives in your papermaking process that could affect long-term preservation?

There are no other additives in our handmade paper.

Do your products contain an alkaline reserve (buffer)? If so, what is the buffering agent and its percentage by weight?

Our paper and board is available in buffered and unbuffered variants, the buffered range contains calcium carbonate (CaCO₃) at 4%.

What is the purpose of buffered paper and board?

Buffered paper has an alkaline reserve (4% calcium carbonate, CaCO₃) added to it to neutralise acids that it may come into contact with from the material it is storing or from the surrounding environment.

Buffered paper and board is typically used for the following:
- Most paper documents (photocopies, letters, newspapers, manuscripts, books)
- Plant-derived textiles such as cotton and linen.

Buffered paper can damage items that are inherently acidic or chemically sensitive, such as:
- Historic photographs (especially 19th-20th century)
- Protein-based textiles such as silk and wool
- Old or deteriorated cellulose nitrate or acetate films.

In the above instances, regular unbuffered paper/board is advisable.

Please note that this is general advice and we recommend consulting with an archival specialist regarding your specific collection, requirement, and storage environment.

Performance & compliance

How well does your paper and board withstand typical handling and storage?

Our paper and board can withstand typical handling and storage in reasonable and stable environmental conditions, e.g. low and stable temperature, low and stable humidity, dry, with good ventilation.

Harsh climate conditions such as high and varying temperature and humidity will accelerate the aging process of any artefact, as well as encourage biological activity like mould, resulting in visible degradation.

What is the lifespan of your paper and board in typical storage conditions?

To date, the oldest example of our paper and board dates back to the 1950s. Paper and board made from 100% cotton is supposed to last hundreds of years in reasonable and stable environmental conditions.

What is the folding endurance and tearing resistance of your paper and board?

Cotton paper exhibits high folding endurance and good tearing resistance due to the strength and flexibility of the cotton fibres.

How do your products perform with various writing and printing media commonly used in archives (e.g. pencil, ink, digital printing)?

Our paper is suitable for basic writing instruments, however, very free-flowing pens are not recommended in order to avoid ink bleed.

Given the handmade nature and texture of our paper, inkjet printers are recommended for digital printing as laser printers require a perfectly smooth surface.

Will there be variation in your papers and boards between batches?

As our paper and board sheets are made individually by hand using traditional papermaking techniques, there will be inherent variance in formation and weight between batches and even between individual sheets.

What quality control measures are in place to ensure consistency across batches?

Our papermaking process contains stringent quality checks and quality assurance steps to avoid many of the common defects that can occur during hand papermaking. Each stage of the papermaking process has defined standard operating procedures (SOP) which are followed and logged to ensure quality at each step. Additionally, quality control checks are carried out at three separate stages to verify that the standard procedures are followed and that the paper is of the expected quality.

Do your products meet recognised international archival standards such as ISO 11108 (permanence and durability), ISO 9706 (permanence), and ISO 18916 (photographic activity test)?

As yet, our paper and boards have not been tested in laboratory conditions against these standards. We are actively looking for laboratories who can carry out this testing and we are able to support any customer who is interested in conducting these tests themselves.

Are you able to provide samples for independent testing or evaluation before a large purchase?

Yes, we can provide samples at a cost for testing and evaluation purposes.

Can you provide detailed technical data sheets for your papers and boards?

The information provided in this document outlines the technical specification of our paper and board. We can provide assistance if any further information is required.

Are there examples of your paper and board being used for preservation in active archives?

Our archival paper and board have been used by various institutes across India, namely:
- Sri Aurobindo Ashram Archives & Research Library
- Indira Gandhi National Centre for the Arts
- National Archives of India
- ISHA Foundation
- National Centre for Biological Sciences
- Sri Ramanasramam Archives
- Avatar Meher Baba Trust.

Product range and customisation

Do you have a standard catalogue of archival products, such as folders, sleeves, and boxes?

We are currently in the process of producing a catalogue of standard archival products that are most commonly requested by our customers, e.g. folders and boxes for documents, manuscripts, photographs, negatives, fabrics, CDs, DVDs etc.

If you have a requirement for a specific product please get in touch for a quotation.

Do you offer custom cutting or scoring for specific archival products (e.g. for pre-scored folders)?

Yes. Please e-mail us details of your requirement for a quotation.

Do you offer custom box making?

Yes. Please e-mail us details of your requirement for a quotation.

Is your board suitable for creating self-supporting boxes?

Yes, our thicker board can be used to make self-supporting boxes up to a certain size. For larger sizes, boxes can be made from a rigid grey board material covered with our archival paper.

Placing an order

Do you have a dedicated technical support contact who can answer technical archival questions or provide guidance?

Yes, however, while we are able to provide advice about our own range of paper and board, we are unable to provide advice on archival and conservation matters as each collection differs based on its condition and storage environment. For technical guidance on archival matters, we recommend contacting an archival consultant.

How can I place an order?

Orders for any item listed on our online shop can be placed online.

Orders for custom items, or any other item not listed on our online shop can be placed with our team via e-mail. E-mail orders will require a purchase order after which a pro forma invoice will be provided. Once payment is received, goods will be manufactured and despatched.

How are your products packaged to maintain their quality during transit?

All paper/boards or custom stationery and storage solutions are packaged to avoid damage during transit.

In works, aspiration towards Perfection is true spirituality