Virchow Biotech Interview Questions, Process, and Tips

HEPA filters typically have a pore size of 0.3 microns.

• HEPA filters are designed to capture particles as small as 0.3 microns in size

• The pore size of a HEPA filter is crucial for its efficiency in trapping particles

• HEPA filters are commonly used in cleanrooms, hospitals, and HVAC systems

Limits for NVPC at rest and in operation refer to the non-viable particle count in a cleanroom environment.

• NVPC limits are typically specified in particles per cubic meter (e.g. 3520 particles/m3 at rest, 35200 particles/m3 in operation)

• These limits are important for maintaining cleanliness and quality in pharmaceutical or semiconductor manufacturing facilities

• Regular monitoring and testing of NVPC levels is necessary

The calculation formula for FCM in air velocity is FCM = 0.075 x V^2

• FCM stands for face velocity calibration factor

• V is the air velocity in feet per minute (fpm)

• The formula is FCM = 0.075 x V^2

I chose this company for its strong reputation in the industry and commitment to innovation.

• Strong reputation in the industry

• Commitment to innovation

• Positive company culture

• Opportunities for growth and development

Molarity and molality are two different ways of expressing the concentration of a solution.

• Molarity is the number of moles of solute per liter of solution.

• Molality is the number of moles of solute per kilogram of solvent.

• Molarity changes with temperature, while molality does not.

• For example, a 1 M solution of NaCl contains 1 mole of NaCl per liter of solution, while a 1 molal solution of NaCl contains 1 mole of NaCl pe

Molarity is a measure of the concentration of a solute in a solution.

• Molarity is defined as the number of moles of solute per liter of solution.

• It is expressed in units of mol/L or M.

• Molarity can be calculated using the formula: Molarity (M) = moles of solute / liters of solution.

• For example, a solution containing 0.5 moles of NaCl in 1 liter of water has a molarity of 0.5 M.