Top Asked Pharma Packing Questions for the Interview

The Packing of drugs is a very crucial part because the safety of drugs is a must at every stage from manufacturing to packaging. Packaging helps the drugs to prevent from the external environment. Today, there are numerous job opportunities available in the pharmaceutical field, providing you with various options to shape your career in the pharma industry according to your interests. To assist you, we have compiled a list of Pharma Packing Questions with answers. Check it out below:

Pharma Packing Questions for the Interview

Pharma packaging has a significant opportunity for growth, but you need to be well-prepared before entering this field. We have compiled a list of all questions related to Pharma packing/production. These questions and answers are prepared based on the fresher as well as experienced individuals which is generally asked in pharmaceutical interviews. These Packing questions along with answers focused on area, machinery, and technical rounds.

NOTE- More Pharma Packing Questions will be added regularly, so visit again:

Packing Questions for Freshers:

QWhat are the Packing and types of packing in pharmaceuticals?
Ans: Packing is an art and technology of enclosing or protecting products for distribution, storage, sales, and use.

Packing is mainly of three types as below:

  • Primary packaging: Primary packing is the material that carries the drug product or fills the drugs inside.
  • Secondary packaging: Secondary packing encloses the drugs inside the carton, bottle, etc.
  • Tertiary packing: A Tertiary is used for bulk handling of drugs like storage in a warehouse.

Q: What is the objective of packaging?
Ans: The primary purpose of drug packaging is the protection of drugs from;

  • Physical protection
  • Barrier protection
  • Containment or agglomeration
  • Security
  • Portion control
  • Convenience.

Q: What is the primary Packing material used for the blister pack?
Ans: Lidding foil likes aluminum foil, paper aluminum foil, and glasin paper foil.

Base foil- PVC( polyvinyl chloride) and PVDC (polyvinylidene chloride).

Q: What are the Advantages and Disadvantages of PVC?
Ans: Advantage: Low cost and Ease of thermoforming

Disadvantage: Poor barrier against moisture ingress and oxygen ingress.

QHow do overcome the lack of barrier properties of PVC?
Ans: To overcome this PVC coating is done with PVDC/ laminated to PCTFE (Polychlorotrifluoroethylene) or COC (Cyclic olefin copolymers) to increase protective properties.

Q: What are WVTR and OTR?
Ans: WVTR is the water vapor transmission Rate.

OTR is an oxygen transmission rate.

Q: WVTR and OTR of PVC?
Ans: WVTR 250 Micro PVC =3.0g/m2/day at 38 °C/90% RH.

OTR around =20 ml/m2/day.

QWhat is GSM?
Ans: GSM is Gram per square meter, coating of PVC expressed in GSM, more GSM means more barrier property against moisture and gases.

Q: How to take a sample for GSM?
Ans: Take a foil size in shape (it’s about 15X15), Finally cut it to weigh, and calculate GSM as per Formula.

Q. How to calculate GSM?
Ans: Weight of sample ✕ 1000/ Area of the sample

Q: What are thermoforming and cold forming?
Ans: Thermoforming– PVC/PVDC passage through a heating station, then PVC/PVDC took the desired shape at a temperature of around 115°C to 130 °C. The heating temperature may vary according to pocket size and shape.

Cold forming is the formation of pockets without heating PVC. Cold-forming PVC is soft and made of aluminum between PVC and polyamide.

Pharma Packing Questions for Experienced Professionals

QThe machine used for blister pack and strip pack?
Ans: BQS (blister quickly through servo) and elmach are mainly used in the case of product packs by using PVC/PVDC material. ALU-ALU(arithmetic logical unit) machine used for strip packing(aluminum foil used for both sides)

QDismantle parts of the blister machine?
Ans: The following are the Dismantle parts of Packing Machines:

  • Forming dia set
  • Web index Roller
  • Channel
  • Guide track
  • CSR
  • Heater (PSR)
  • Printing (BCP)
  • Printing gears
  • Perforation guide track
  • Perforation tool
  • Embossing tool
  • Punching tool
  • Cutting gears
  • Sealing gear
  • Punching indexing roller

QDifferent types of machines used for tablets in Primary Packing?

  • Blister machine eg. alu-alu (BQS), elmach EPI 2000,2500,3010,3015 and 3522 grand etc.
  • Stripe Packing machine.

Read Also: BQS Machine Interview Questions and Answers

QSome important Terms and full forms
Ans: BFR– Blister forming Roller
CSR– Counter sealing Roller
PHR– Peripheral Heating Roller
PSR– Pressure sealing Roller
BCP– Batch Coding and Printing
PRC– Print Registration control,

Q: Checking of dispensing raw and packing materials
Ans: Follow FEFO (First expiry first out) rule, AR.No. (analytical report number), the quantity of material, product code, and affix of approved labels from quality control.

QPharmaceutical barcode system
Ans: A Barcode is an image of lines and lines denoted with a specific number; lines may be thick, wide, or thin lines.

The code represents a sequence of lines for a particular number. A bar code symbol typically consists of five zones, a quiet zone, a start character, data digits, a stop character, and another quiet zone.

QTrack and trace system in pharmaceuticals
Ans: Track and trace systems are effectively used for serialization in pharmaceuticals, identification, and prevention of counterfeit drugs throughout the supply chain.

Q: Difference between 1D, 2D, and 3D Bar-code
Ans: The difference between 1D, 2D, and 3D Bardcode in Pharmaceuticals is as Follows:


ID Barcode is Also called one dimension barcode and consists of a parallel linear line with a white background. it stores 8-15 character data information

ID BARCODE pharma packing

2D Barcode is Also called two dimensions or matrix barcode having box types structure. it can store up to 2000 characters.

2d barcode pharmaceutical

Uses the peak of the lines to insert information. The information in the 3D barcode is mostly correct and can’t be seen by the eye. This makes it tamper-proof and a great aid for business setups. 3D barcode is a superb resolution for rectifying varied issues, like inaccurate valuation, inventory errors, and overstocking, that is common within the case of 2D barcodes.

3d barcode

QExplain 2D Barcode
Ans: It looks like squares or rectangular with small dots.

Q: How many sensors were used in the BQS machine?

  • Lidding foil sensor
  • Sensor for forming foil
  • Inlet water sensor
  • Hopper sensor for checking product level
  • Heating plate sensor

QName of Sensors used in the cartonator machine:
Ans: Product magazine sensor, product count sensor, carton call, low carton call, pusher call, loading safety, a sensor for rotary, the in-counter sensor for the position, hand-wheel sensor, hand wheel out sensor, and empty carton rejection sensor.

Q: Principle of Blister packing machine (BQS)?
Ans: BQS (in the case of the heating plate and sealing plate) works on the Principle of flat sealing and flat forming. For blister machine (in the case of the heating plate and sealing Roller) works on flat forming and roller sealing.

Q: How Many Servo motors are in the Blister machine?
Ans: Blister Quick Through (BQS) has a total of 5 servo motors:

  • Main cam
  • Feeding drum
  • Printing drum
  • Puller drum
  • Punching cam

Q: How many Challenge tests for the Camera vision system
Ans: challenge test for Empty cavity, Broken Tablet, Discolored tablet, and foreign Particles.

QThermal Test for thermally affected Blister:
Ans: Stop the machine and mark all the blisters that are contacted with a hot or sealing plate / Roller with a marker. Ensure that all contracted blisters are rejected.

Q: What is knurling
Ans: Dotes are found on blister /strips, which comes during sealing of blister/ Strips due to the presence of dotes on the Sealing plate/Roller. Knurling prevents the failure of leak tests and also contributes to maintaining good-quality blisters.

Q: Types of knurling
Ans: Knurling types: Cross net type, dote type, and Diamond shape

Q: What is stiffener, and why is it used?
Ans: The presence of extra empty pockets or grooves on the Blister is known as a stiffener and is used to protect products from getting damaged during Packing and transport

Q: Which Test is done to test for PVDC
Ans: The morpholine test is done for checking the PVDC layer, use one drop of morpholine solution on either PVDC to check the property if the color of the foil changes to yellowish it means it passes the Test.

QWhat does NFD stand for?
Ans: NFD stands for non-fill detector

QWhat is the Role of a Pinhole detector?
Ans: The pinhole detection system is used to identify holes as small as 25 microns (0.001 inches). It has high infrared-sensitive radiation to detect a very small hole.

Q: Tell the name of the Ink used to detect leakage in the Blister
Ans: Methylene blue solution is used to detect leakage in the blister.

Q: What percentage of the methylene solution is required to detect a leak test?
Ans: The percentage of uses is 2% v/v.

QHow many blisters/strips were used for the leak test?
Ans: It depends on the number of pockets present in sealing plates/rollers.

Q: What is the frequency of replacing water in the leake teat apparatus?
Ans: Water shall be replaced daily.

Q: How much vacuum is required for the check leak test?
Ans: The standard vacuum used for leak test apparatus is 280±10. It may vary from region to region.

Q: How do a challenge test for the Leak test apparatus?
Ans: Puncher the blister/strips with the help of a small sharp needle and perform the leak test process, then visually check by opening the blister/strips, if the tablet is found to leak Means the Test is a pass.

Q: How to Discard tablets used for Leak test?
Ans: Whenever doing a leak test, put all the tablets/capsules in a designated S.S Container (with a label), At the end of the shift/ product, collect all non-recoverable in a polybag with a proper label on it, weigh them, and Discard all the tablets/Capsules by pouring them into drain point in the washing area.

Q: Why Tablets/ Capsules are not used for reprocessing and Repacking?
Ans: We can’t use these tablets/capsules because the integrity might fail due to the negative vacuum pressure applied during leak testing. Although regulatory agencies do not prefer reprocessing/repacking after leak testing.

QWhat is the frequency of the leak test?

  • Start of batch and then after every one hour
  • After the change of printing./PVC/pvdc foil.
  • After every break
  • At the start of the shift
  • After power failure

Q: The setting of weight limit for cartons
Ans: Take an individual 20 cartons weight and calculate avg. Weight of 20 cartons, now take half the weight of blister/strips and leaflets (lower in weight).

QHow to calculate the minimum and maximum weight of the carton:
Ans: Minimum weight: standard weight of carton- 50% weight of blister/leaflet (lower in weight)

Maximum weight: standard weight of carton+ 50% weight of blister/leaflet (lower in weight)

Q: Die Depth of forming Roller?
Ans: In case of PVC: At for Flat forming and sealing- 12mm

In the case of Alu- Alu: Cold forming- 09mm

Q: What Rubber Stereo Size Used in Packing?
Ans: Generally used rubber stereo size is 1.75 to 2.5mm.

Q: Types of Rubber Stereo Used in Packing
Ans: Flate and Groove

QMonthly Calibration of weighing balance done for?
Ans: Monthly Calibration of weighing balance is done for Accuracy, Reproducibility, and Eccentricity.

QWhy do the Calibration of balance?
Ans: Calibration is done for measurement accuracy of the instrument compared to specified limits.

Q: Defects Related to Blister Pack
Ans: Empty Blister, cut pocket, knurling defects, printing defects on foil, overprinting defects, embossing defects, pocket cut, I mark defects, cutting defects, and pinhole.

Q: Validation criteria for batch packing
Ans: Validate the batch as per the given validation protocol. Some common criteria are:

  • High forming, high sealing, and low machine speed.
  • Low forming, Low sealing, and High machine speed
  • Moderate forming and sealing with moderate speed
  • Perform in-process and leak tests at every stage and fill in details in BPR.

Q: How to create a batch in a camera vision system
Ans: Read SOP for the Camera vision system and pinhole detector

Q: Which coating is done on Heating drums and their purposes?
Ans: Teflon coating.

Q: Why Teflone coating on Heating Drums is effective for Packaging Pharmaceutical Products?
Ans: Teflon coating is done to prevent the sticking of thermoplastic foil with a heating roller or plate.

Note: More Pharma packing questions for the interview will be added soon here. Comment if any Questions to get an answer and also share valuable information. Comment below if you need Packaging Questions related PDF.

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