The Office of Indiana State Chemist is temporarily located in AGAD (615 W. State Street, Room 18, West Lafayette, IN 47907).
Visitor paid parking is available in the Harrison Street Garage.
Our mailing address remains the same (175 S. University Street, West Lafayette, IN 47907-2063).


OISC - Rules, Regulations and Laws
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OISC Rules, Regulations and Laws:




PESTICIDE SECTION

 

Current Laws:

 

Current Rules:

The federal regulations (CFR) listed below have been adopted as Indiana state requirements under state laws IC 15-16-4, sections 57 and 69, and IC 15-16-5, sections 10.5, 44, 45, 49, 54, 57, 59 and 66:


Rule Readoption Comment Period:

The following rules have been submitted for readoption without changes:

OISC is soliciting public comments on rules expiring under IC 4-22-2.6. Comments may be submitted in one of the following ways:

  1. By mail or common carrier to the following address:
    LSA Document #24-622
    Sarah Caffery
    Office of Indiana State Chemist
    175 South University Street
    West Lafayette, IN 47907-2063
  2. By email to publiccomments@groups.purdue.edu. PLEASE NOTE: Email comments will not be considered part of the official written comment period unless they are sent to the address indicated in this notice.

All comments must be postmarked or time stamped not later than September 19, 2025.

 


 

FEED & PET FOOD SECTION

 

Current Law:

Current Rule:

Proposed (Readoption of 355 IAC 6: Animal Foods):


 

FERTILIZER SECTION

 

Current Laws:

Current Rules:

Proposed (Revision to Indiana Agriculture Ammonia Rule - 355 IAC 3):

 

Proposed (Revision to Indiana Fertilizer Civil Penalty Schedule - 355 IAC 9):


 


 

SEED SECTION

 

Current Laws:

Current Rule:


Proposed: #18-443 - Update to Noxious Weed Seed Rule:

Proposed: #20-82 - Readoption of Standards for Seed and Seed Labeling:

 


 

HEMP SECTION

 

Current Laws:


Proposed: #23-531 - Emergency Hemp Rule: