What is blending uniformity?

Blend uniformity analysis (BUA) is a routine and highly regulated aspect of pharmaceutical production. In most instances, it involves quantitative determination of individual components of a blend in order to ascertain the mixture ratio.

How do you calculate blended uniformity?

This method is used to demonstrate blend uniformity using dosage unit results. For example, a tablet with potency of 19.4 mg and weight of 98 mg = 19.4 ÷ 98 = 0.198 mg/mg. Label claim is 20 mg per each 100 mg tablet, so the weight corrected result is 0.198 ÷ 0.20 * 100 = 99% of target blend potency.

What is the difference between assay and blend uniformity?

The main difference between content uniformity and assay is that content uniformity is a test in which evaluation units are done individually whereas assay is a test in which multiple units are done simultaneously.

Why is blend uniformity important?

Blend uniformity is an important factor in pharmaceutical manufacturing. A poor uniformity of the blend can cause the rejection of the product that can lead to the loss of revenue. No method is developed yet to determine the uniformity of blend during the mixing.

What is the difference between blending and mixing?

The biggest difference between the two is that in chemical blending the chemicals used are combined permanently and they make an entirely new chemical which has its own properties. In chemical mixing, the combined ingredients don’t create a new chemical and over time will separate back into their original forms.

What is the limit of blend uniformity?

The Acceptance criteria of Blend Uniformity Analysis is as follows, RSD (relative standard deviation) of all individual results ≤ 5.0 percent. All individual results are within 10.0 percent (absolute) of the mean of the results (90% to 110% of added amount of active drug substance- API).

What is Blender in pharma industry?

A blender is a very important equipment in the pharmaceutical industry, as a medicine is manufactured by mixing a number of drugs and chemicals. This mixing is required to be undertaken in either dry or wet state depending upon the chemical composition and the reactions allowed.

What is content uniformity as per USP?

The test for Content Uniformity is based on the assay of the individual content of drug substance(s) in a. number of individual dosage units to determine whether the individual content is within the limits set. The Content. Uniformity method may be applied in all cases.

What is content uniformity in pharma?

Uniformity of Content is a pharmaceutical analysis parameter for the quality control of capsules or tablets. Multiple capsules or tablets are selected at random and a suitable analytical method is applied to assay the individual content of the active ingredient in each capsule or tablet.

Why is blending needed?

It is the technique of gently intermingling two or more colors or values to create a gradual transition or to soften lines. As an artist, it’s important to practice blending in any medium you choose to work with. It adds to the subtlety of the work and can give your art a more polished, finished look.

What is the purpose of blending?

Blending and mixing can be used to improve the quality of products, evenly coat particle materials, disperse liquids, or fuse materials. You may need to blend to achieve certain characteristics in an end product such as adjusting consistency or smoothing texture.

What is the use of blend uniformity?

Blend uniformity. BUA is an in-process test that is useful for ensuring the adequacy of the mixing of active pharmaceutical ingredients (APIs) with other components of the drug product. BUA or homogeneity testing can be applied to all dosage forms, but is recommended for those dosage forms for which the USP requires content uniformity testing.

Who are the authors of blend and content uniformity?

Current Events in Blend and Content Uniformity Authors: James Bergum, James Prescott, Ravindra Tejwani, Thomas Garcia, Jon Clark, William Brown This article presents a summary of the stratified sampling session held at…

What to do if blend uniformity fails during trial batches?

During trial batches, Blend Uniformity shall be done. If blend uniformity fails then a stratified sampling of finished product shall be done and Uniformity of dosage unit test shall be performed. Stratified In-process dosage unit sampling shall be done.

When to use acceptance criteria for blend and content uniformity?

Therefore, if data obtained from the sampling plan are evaluated using acceptance criteria, the criteria for blend and content uniformity should be appropriate for the Phase of development. For example, looser criteria may be acceptable during the manufacture of Phase 2 clinical supplies (e.g., tested against USP <905>).