---
kind: "section"
citation: "40 C.F.R. § 63.5385"
title: "40"
number: "63.5385"
heading: "How do I measure the quantity of finish applied to the leather?"
url: "https://uscodex.org/cfr/40/63.5385"
---

# §63.5385. How do I measure the quantity of finish applied to the leather?

- (a) To determine the amount of finish applied to the leather, you must measure the mass, or density, and volume of each applied finish.
- (b) Determine the mass of each applied finish with a scale calibrated to an accuracy of at least 5 percent of the amount measured. The quantity of all finishes used for finishing operations must be weighed or have a predetermined weight.
- (c) Determine the density and volume of each applied finish according to the criteria listed in [paragraphs (c)(1) through (3)](#c-1..c-3) of this section:
  - (1) Determine the density of each applied finish in pounds per gallon in accordance with [§ 63.5395](/cfr/40/63.5395.md). The finish density will be used to convert applied finish volumes from gallons into mass units of pounds.
  - (2) **Volume measurements of each applied finish can be obtained with a flow measurement device.** For each flow measurement device, you must perform the items listed in [paragraphs (c)(2)(i) through (v)](#c-2-i..c-2-v) of this section:
    - (i) Locate the flow sensor and other necessary equipment such as straightening vanes in or as close to a position that provides a representative flow.
    - (ii) **Use a flow sensor with a minimum tolerance of 2 percent of the flow rate.**
    - (iii) **Reduce swirling flow or abnormal velocity distributions due to upstream and downstream disturbances.**
    - (iv) **Conduct a flow sensor calibration check at least semiannually.**
    - (v) At least monthly, inspect all components for integrity, all electrical connections for continuity, and all mechanical connections for leakage.
  - (3) Volume measurements of each applied finish can be obtained with a calibrated volumetric container with an accuracy of at least 5 percent of the amount measured.

## Notes

### Source

Source: 67 FR 9162, Feb. 27, 2002, unless otherwise noted.

### Authority

Authority: 42 U.S.C. 7401 et seq.

### Source

Source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.