Dial in the right float ratio to control penetration, chemistry, and yield—so your tannery runs cleaner, faster, and with consistent results batch after batch
Accurately Calculating Float When Using TanX AL-6 or TanX PR-3
When using Advanced Tanning Solutions TanX AL-6 or Advanced Tanning Solutions TanX PR-3 tans, proper float calculation is critical to penetration, efficiency, and consistent tanning results. The recommended float range is 350–375 percent of the weight of drained, shaved hides. This guide explains exactly how to calculate float volume and how to adjust it based on your tanning method.
How to Calculate Float Volume
To determine the amount of water needed in gallons for a 350 percent float, use the following formula:
Hide weight × 350 percent = total weight of water needed
Then divide that number by 8.33, which is the approximate weight of one gallon of water.
Example Calculation
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Hide weight: 150 pounds
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Float percentage: 350 percent
150 × 350 percent = 525
525 ÷ 8.33 = 63 gallons
You can also calculate the same result by converting the percentage into a decimal:
150 × 3.5 = 525
525 ÷ 8.33 = 63 gallons
When calculating a percentage, use the percent key on your calculator. Advanced Tanning Solutions recommends rounding up to the nearest gallon.
Important Float Guidelines
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If using a static tan, use a float closer to 350 percent. Do not pack the bath too tight, as the hides need room to be agitated.
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For a wet drum tan, you may use a slightly tighter float. The ideal percentage will depend on your specific wet drum process.
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Do not run a float less than 330 percent.
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If you use a float greater than 400 percent, the tan will be too diluted and performance will suffer.
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Shaving hides prior to tanning reduces overall weight, which means less tan is required. Shaving also improves penetration by allowing the tan to move more efficiently through thinner hide structure.
Key Takeaways
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Recommended float range for TanX AL-6 and TanX PR-3 is 350–375 percent
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Always calculate float based on drained, shaved hide weight
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Divide total water weight by 8.33 to convert to gallons
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Round up to the nearest gallon
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Static tans work best closer to 350 percent
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Wet drum tans may allow slightly tighter floats
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Never drop below 330 percent
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Avoid floats above 400 percent
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Shaving improves penetration and reduces tan usage
