Interview Questions and Answers

The number of weights in a balance calibration weight box varies depending on the specific box.

• The number of weights can range from a few to several dozen, depending on the precision required for calibration.

• Common calibration weight boxes may contain weights ranging from 1 gram to 500 grams.

• Some calibration weight boxes may also include additional weights for fine adjustments.

• The exact number of weights in a box can be determined by checking the specifications or contacting ...read more

Weights can be differentiated by their units of measurement (mg, g), and by their numerical value (2, 20, 200).

• Differentiate by units of measurement (mg, g)

• Differentiate by numerical value (2, 20, 200)

Water content can be calculated by subtracting the weight of the dry sample from the weight of the sample after drying.

• Water content = (Weight of wet sample - Weight of dry sample) / Weight of dry sample

• Dry the sample in an oven at a specific temperature until it reaches a constant weight

• Weigh the sample before and after drying to determine the weight loss

• Water content is usually expressed as a percentage

Similarity factor (recovery factor) is calculated to assess the similarity between two dissolution profiles.

• Similarity factor is a measure of the closeness of two dissolution profiles.

• It is calculated using the mean and standard deviation of the percent dissolved values at each time point.

• The formula for similarity factor is SF = 50 * log((1 + (1/n) * Σ(|R-T|/R)) / (1 + (1/n) * Σ(|R-T|/T))), where R is the reference profile and T is the test profile.

• A similarity factor value ...read more

Theoretical plates are considered as system suit because they help in separating and purifying components in a system.

• Theoretical plates are used in chromatography to separate and purify components in a mixture.

• They are considered as system suit because they help in achieving a high degree of separation efficiency.

• The more theoretical plates a system has, the better it is at separating components.

• Theoretical plates are also used to calculate the height equivalent to a theoret...read more

Quality assurance involves ensuring that products or services meet established standards and customer expectations.

• Develop and implement quality control processes

• Conduct regular inspections and audits

• Train employees on quality standards

• Use data analysis to identify areas for improvement

• Collaborate with other departments to ensure quality throughout the organization

HPLC is a technique used to separate, identify, and quantify components in a mixture.

• Prepare the sample and inject it into the HPLC system

• Separate the components using a stationary phase and mobile phase

• Detect the separated components using a detector

• Analyze the data to identify and quantify the components

• HPLC is commonly used in pharmaceuticals, food and beverage, and environmental testing