The borate, zinc salt limit value is applicable to textiles as well as leather; the limit is 500 μg/L.

This is based on results for total boron and total zinc individually as determined by the ICP test. This means that total boron and total zinc values should be less than 500 μg/L to be conformant to the ZDHC wastewater requirements.

Where total boron is >500 ppb and total zinc is <500 ppb (or vice versa) the sample is still conformant to the ZDHC wastewater requirements.

Labs should input the values for total boron and total zinc in the EDR template when uploading the test results.