Blank Samples for IHPAT Metals Round 235/ELPAT Air Round 125

Due to challenges in the supply chain, IHPAT Metals Round 235/ELPAT Air Round 125 sample kits contain two blank filters. This will have no impact on the samples, but we want to make participants aware of this change. This is only expected to impact this round of samples.

The samples are packaged with their corresponding blanks:

• One small bag holds Blank, Sample 1, and Sample 4

• One small bag holds Blank 2, Sample 2, and Sample 3

The two smaller bags have been combined into a larger bag for the complete round set and labeled as Round 235.

IHPAT 235 Kit:

One bag holds Blank, Sample 1, and Sample 4; One bag holds Blank 2, Sample 2, and Sample 3:

Individual Bags with Blank and Blank 2 with their corresponding samples: