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Pest Control Service Bureau
Toxicological / Biosafety Studies

Pesticides are chemicals used to control pests. The term 'pesticide' includes insecticides, herbicides, fungicides, algaecides and fumigants.

Thrust Areas.
  • Analysis of technical grade pesticides and formulations
  • Shelf life studies as per CIB guidelines
  • Analytical toxicology of agrochemicals

Analysis of Technical Grade Pesticides and Formulations

What are Technical Grade Pesticides ?

Technical grade pesticides are chemical compounds consisting of 85 percent or more of the active chemical constituent and the rest are impurities produced during chemical synthesis.

Types of Formulations

Depending upon the intended use of pesticides there are different types of formulations like DP, WP, GR, Palets, SD, AS and EC etc.

Factors Responsible for different types of formulations
  • Chemistry of the active ingredient
  • Toxicology of active ingredient
  • Effectivity of the product against the pest
  • Effectivity of the product on the plant, animal or surface
  • Effectivity of the product on the environment
  • Method of application and equipment used
  • Rate of application
Why is analysis required for the technical grade pesticides and the pesticide formulations
To ensure the percentage purity of active ingredient in both technical grades and formulations as per the labelled claim by the manufacturers
  • To ensure the suitability of the pesticide formulation for its intended use.
  • To ensure safe and judicious use of pesticides
  • To ensure the shelf life of active ingredient.
What are the quality norms and protocols followed for analysis

1. Analysis is done as per both National and International standards with following major protocols:

  • Bureau of Indian Standard specifications.
  • CIPAC

2. In-house validated method and procedure
3. Party's specification

Test Parameters

In order to ensure the right quality of the pesticide, besides testing for the active ingredient, it is also necessary to test other parameters given as par speeification.

Role IIIRT

IIIRT plays an important role in analyzing and certifying the pesticides both technical grade and formulations for their safe use. IIIRT has the facilities to carry all the above mentioned tests to ascertain the conformity of various national or international specifications.

Packaging/Shelf Life or Stability Enhancement of Shelf Life Studies
What is Shelf life

Shelf life refers to the period from initial preparation and packaging during which the technical grade pesticides or the formulation remains within its physical, chemical and toxicological specifications at the specified storage condition. It should meet the appropriate standards of identity, quality and purity of active ingredient.

What are the factors affecting Pesticide Stability
Environmental factors such as:
  • Temperature
  • Light
  • Air
  • Oxygen
  • Moisture
  • Carbon dioxide
Other ingredients in the formulations
Leachings from containers
How are the stability tests conducted ?
Stability testing of pesticides is based upon well designed studies to determine the retention of product integrity (i.e. percent active ingredient, physical characteristics, chemical parameters and efficacy) as a function of time. Studies are done at accelerated conditions as well as controlled room temperature conditions.
The product samples are analysed at various intervals by validated analytical methods.
Why is it important to conduct shelf life / stability studies ?

It is a mandatory requirement by CIB that the manufacturers should submit the data for shelf life studies at the time of getting their product registered.

Role

SRI has the complete arrangement to take up the studies for shelf life or enhancement of shelf life as per the CIB guidelines.

According to CIB guidelines :
  • Pesticides or their formulations are stored under three different agro-climatic conditions of the country
  • Properties are determined at fixed intervals of time over a prolonged period to study the deterioration pattern

Certification of Organic Farming

What is organic farming ?

Organic farming refers to agricultural methods

  • Without any use of chemical pesticides, fungicides or weedicides
  • Without any use of chemical fertilizers (eg urea, potassium sulfate, superphosphate etc.)
What are the principles involved in organic farming ?

The principles involved in organic farming are :

All seeds and plant material should be certified as organic i.e. seeds and plants should not be chemically treated with any synthetic pesticides.
  • Accumulation of heavy metals in the soil should be minimal
  • Manure should be certified as organic
  • Water used for irrigation should be free from pesticides or heavy metal contamination.
  • The livestock should be fed 100% organically grown feed of good quality
All relevant measures should be taken to minimize pesticide contamination from outside and within the farm by wind drift, drainage and irrigation.
No use of fumigants or chemicals during storage
What does organic certification involve ?

Organic certification involves

  • Farm certification
  • Product certification

Role

IIIRT plays an important role in certification of organic farming by carrying out analysis of samples of :

  • Product of organic produce
  • Crop during the stages of its growth
  • Soil used for organic farming
  • Feed for the live stock
  • Water used for irrigation
For the following contaminants
  • Pesticides, herbicides or fungicides
  • Heavy metals
  • Minerals and fertilizers

Analytical Toxicology of Agrochemicals

IIIRT provides comprehensive range of toxicity studies as per the national and international norms for different pesticides and their formulations by carrying out -

Acute / Sub acute toxicity studies by following routes :
  • Oral
  • Dermal
  • Inhalation
  • Skin and eye irritation
Studies are conducted on mice, rabbits, guinea pigs, fish, bird, honey bee etc.
  • Long term toxicity studies
  • Mutagenecity studies
  • Reproductive studies on rats
  • Carcinogenecity studies on rats and mice

Development of pesticide formulations

IIIRT provides the customer based requirements for development of different type of pesticides formulations whether aqueous based or oil based.