# Stain, Trichrome, Mallory'S
> **Product code: HYW** · Class I — Low Risk (general controls) · Hematology · 21 CFR 864.1850
## Classification
- **FDA Product Code:** HYW
- **Device class:** Class I — Low Risk (general controls)
- **Regulation:** 21 CFR 864.1850
- **Review panel:** PA
- **Medical specialty:** Hematology
- **Submission type:** 4
- **GMP exempt:** Y
- **Life sustaining:** N
- **Implant:** N
- **Third-party review:** N
## Market data
- **Cleared 510(k) submissions:** 2
- **Registered establishments:** 10
## Source
- [FDA Device Classification](https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfpcd/classification.cfm?ID=HYW)
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