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Product name
Hercules Size Test Ink
Alternative names
T530 HST, HST Ink, Formic Acid HST Ink
Description
We are the HST ink supplier. We supply hercules size test ink used in paper mill laboratories to test the sizing of paper. Hercules Size Test Ink, the green formic acid based ink used in paper mill laboratories for measurement of internal sizing of paper and board is made by us. The test is more sensitive than the Cobb Test.
Paper and board is sized to control the rate (not amount) of liquid penetration into the sheet in order to: Improve print quality, resist wetting & loss of strength, and contain liquids. The Hercules size test measures the time for a liquid sample to penetrate through the sheet.
We supply 1 – 8% formic acid grades. Higher concentrations of formic acid are hazardous for transportation.
Background Information
TAPPI Testing Methods, Tappi Press, Atlanta, GA, USA.
https://www.complianceonline.com/images/supportpages/501038/sample_T530.pdf
Handbook of Physical Testing of Paper, 2nd Edition, Eds., R.E. Mark, Et. Al.
https://www.abebooks.com/9780824707866/Handbook-Physical-Testing-Paper-Second-0824707869/plp
G.A. Smook in Handbook for Pulp and Paper Technologists, Angus Wild, Vancouver, Canada, 2002.
https://www.abebooks.co.uk/9780969462859/Handbook-Pulp-Paper-Technologists-Smook-0969462859/plp
Application
Measurement of the degree of sizing of paper and board
Quantity
50g
Package
Bottle
Availability
Made to order
Price
This stain is classified as corrosive and is expensive to ship. Graf C stain is cheaper.
Other information
This ink is formulated for the TAPPI T 530 Hercules Size Test and measures the resistance of paper and board to water. TAPPI T530 is more sensitive than the Cobb test.
Further reading & references
Below you’ll find a curated collection of references related to this product. These sources include academic research, review articles, and case studies that explore the chemistry, applications, and sustainability benefits our products. Whether you’re looking for in-depth technical details or broader insights into their real-world use, these references are a great place to start.
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The Effect of of Drying Conditions on Sizing of ASA Sized Paper
Melanie K. Blanchard Western Michigan University. 1984. Western Michigan University Thesis.
https://scholarworks.wmich.edu/cgi/viewcontent.cgi?params=/context/engineer-senior-theses/article/1072/&path_info=198404_Blanchard_M.pdf
Product number
77HST26
CAS Number
Green liquid ink formulation
