CIL Provides Accredited Animal Feed Inspection Services in Panipat, Haryana, India. Some aspects of and considerations in feed sampling. The accuracy and reliability of the results of any analysis in the feed industry begins with the quality of sampling. An analysis can be said to be as good as its sampling because several challenges that can affect accuracy and reliability of the results are associated with sampling of the feeds and feed materials. It is, therefore, critical to ensure sampling of feed ingredients and feeds is done in an area and in a way that makes the procedures easy, minimize the risk of contamination and cross contamination, makes proper performance of the laboratory analysis possible, and ensures all safety and health precautions for the sampler and the environment. Types of samples, Pierce identified various types of samples depending on their purposes and uses as follows, check sample, composite sample, discrete sample, duplicate sample, official sample, purchasing sample, referee sample, reference sample, retained sample, standard sample, and working sample. Sampling errors may be due to the heterogeneity of the inspected characteristics, the random nature of sampling, and the known and acceptable characteristics of the sampling plan. Some of the measures to be taken to minimize sampling errors in the feed industry include, Sampling procedures should be based on the objectives, standards, or purposes of the analysis. Simple random sampling, stratified random sampling, and systematic sampling are examples of common sampling schemes used in the feed industry. Use appropriate sampling equipment that will not introduce contamination. For example, do not use lead containing materials to collect samples meant for lead analysis. Examples of sampling equipment include grain probes (slotted grain probes, open handled grain probes, open handled spiral probe), pelican grain sampler, tapered bag triers, double tube bag triers, single tube, open ended bag triers, bomb or zone sampler. Collect representative samples. If the samples collected are not representative of the whole, the results of the analysis become skewed. To collect a representative sample, the sampling scheme must be followed, adequate quantity of sample must be collected, and sampling equipment and procedure must be appropriate, required inspection of sample, among other things. Use the right quantity of materials and avoid splashing of samples during collection and analysis. Several errors can be associated with the splitting of samples, if not done carefully. Use standard reference materials. Repeat analysis. Validate laboratory methodologies and use standard methods. Use well trained and knowledgeable personnel. Observe sampling precautions required for the methods of analysis. Use the appropriate sampling plans. Sampling plan is a planned procedure that enables the choice of separate samples from a lot, for the purpose of getting the needed information, such as a decision on compliance status of a lot. It is also a scheme that defines the number of items to collect and the number of non conforming items required in a sample to evaluate the compliance status of a lot. Thus, without an appropriate sampling plan, it may be practically impossible to accurately decide the compliance status of a particular lot of a product. Codex guideline for sampling recommends seven important considerations in selecting appropriate sampling plans in compliance with relevant standards in the feed industry, (i) existence (or not) of international reference document on sampling of the products under consideration, (ii) nature of control (individual or whole lot), (iii) nature of the characteristic to control (qualitative or quantitative characteristics), (iv) choice of the quality level, limiting quality or acceptance quality level, in line with principles laid down in Codex Manual of procedures and the type of risk, (v) nature of the lot, that is bulk or pre packed products, size, homogeneity and distribution concerning the characteristics of control, (vi) composition of sample, that is those composed of single or more than one sampling unit, (vii) choice of the type of sampling plan.