Check every truckload of paper stock: the weight worth paying for after removing water above the reference moisture and impurities above the tolerance, with the amount payable and the monthly total.
Pre-sizing and estimating tool: results do not replace design, calculations or reports signed by a licensed professional, nor verification against the applicable codes and standards.
Each bar is the load’s gross weight, split into paid weight, moisture deduction and impurity deduction.
With no excess impurities, at the reference moisture entered.
The calculation report gathers this page's inputs, results, equations, assumptions and references, with fields for project, engineer and revision. The full report also includes the charts and interpretations, in color. In the print dialog, choose Save as PDF.
To check the weight worth paying for on each load of paper stock (OCC, mixed paper or plastic film) when it arrives wetter or dirtier than the agreement allows. Paste the month’s scale tickets and get paid weight, deduction and value for each load and in total.
Dry mass does not change; only water above the reference is removed: W = W_gross × (1 − M) ÷ (1 − M_ref). With a 10% reference, a 38,200 lb load at 14% moisture is worth 36,502 lb corrected. Below the reference there is no deduction or credit.
The one in your purchase agreement. In Europe, EN 643 treats up to 10% as natural for paper for recycling and lets the buyer claim back water weight above it, so 10% is a common reference. The ISRI (ReMA) circular focuses on prohibitives and outthrows by grade, such as 1% prohibitives and 5% total outthrows for grade 11 OCC.
The 8 loads weigh 156.9 short tons gross and become 149.2 tons paid: 6.5 tons of water above 10% and 1.2 tons of impurities above 1.5%. At $100 per ton, the deduction is worth about $774. Ticket 5525, at 19% moisture, has the largest deduction (about 11% of its weight) and is close to the 20% rejection limit.
Sample several bales per load. Oven drying (ISO 287 or ASTM D644) is the reference; bale moisture meters are fast but should be checked against the oven. For contamination, hand-sort a representative sample and weigh what is not the grade.
Results are only as good as the sampling: one soaked bale in the middle of a load may be missed. Tolerances and limits loaded are example values. Off-grade claims (wrong grade of paper) and disposal costs of contaminants are not included.
The agreement usually allows rejecting the load or accepting it with a deduction. The page shows the deducted value so you can decide. Document sampling with photos and lab results, and work with the supplier on covered storage and tarped trailers.
Important notice: Indus Metrics tools produce estimates and pre-sizing results from the data you enter and from published engineering methods. They do not replace design, calculations or reports signed by a licensed professional engineer (PE), nor verification against the applicable codes, standards and regulations, such as OSHA rules and the ASME codes. Material and fuel properties vary: check manufacturer data or your own process analyses before deciding. By using this site you agree to the Terms of Use.
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