HardyVal™ MTK (Multiple Technician Verification Kit)

Cat. no. HVMTK HardyVal™ MTK (Multiple Technician Verification Kit) 1 kit
Each kit contains:
Cat. no. TSBA TSB (Tryptic Soy Broth) Red, Ampoule, 3mL 5ea
Cat. no. TSB15V TSB (Tryptic Soy Broth), USP, 20ml serum vial with needle-port septum, 15mL 5ea
Cat. no. TSB100B TSB (Tryptic Soy Broth), USP, Bag, 100mL 5ea


Hardy Diagnostics HardyVal™ MTK (Multiple Technician Verification Kit) is recommended for verification of personal aseptic technique for low and medium complexity levels within a sterile compounding pharmacy facility or other cleanroom application. Each kit contains enough media to perform aseptic technique verification for up to five technicians.

This product is not intended to be used for the diagnosis of human disease.


High risk manipulations, such as those performed during the manufacture of compounded sterile preparations or used in aseptic transfers performed in environmentally controlled or cleanroom applications, require specified training and routine verification of aseptic skills. Aseptic technique verification is used to verify that personnel have the necessary skills to compound sterile preparations. HardyVal™ MTK (Multiple Technician Verification Kit) is designed for use in performing aseptic technique training or in the routine verification and recertification of aseptic technique.

HardyVal™ MTK contains Tryptic Soy Broth formulated in accordance with the U.S. Pharmacopoeia standard formula for Soybean Casein Digest Broth. Tryptic Soy Broth is widely used for the cultivation of microorganisms from environmental sources; supporting the growth of the majority of bacteria and fungi. This medium contains digests of soybean meal and casein, which provide amino acids and other nitrogenous substances, making it a highly nutritious medium for a variety of microorganisms. Sodium chloride is added to maintain the osmotic equilibrium. Dextrose is incorporated as an energy source. The dipotassium phosphate is included in the formulation as a buffer to maintain pH. In addition, the TSB Red, Ampoule component contains an inert red dye to aid in the visual verification of aseptic transfer.


Ingredients per liter of deionized water:*

Pancreatic Digest of Casein 17.0g
Sodium Chloride 5.0g
Papaic Digest of Soybean Meal 3.0g
Dextrose 2.5g
Dipotassium Phosphate 2.5g

In addition, Tryptic Soy Broth (TSB) Red, Ampoule contains an inert red dye.

Final pH 7.3 +/- 0.2 at 25ºC.

* Adjusted and/or supplemented as required to meet performance criteria.

Formulated in accordance with USP <62>.(1)


Storage: Upon receipt, store at 2-25ºC away from direct light. Media should not be used if there are any signs of deterioration, discoloration, contamination, or if the expiration date has passed. Product is light and temperature sensitive; protect from light, excessive heat, moisture, and freezing.



NOTE: An assessment should be performed to determine if additional supplies or equipment are needed to validate the process when performing complex manipulations or in the verification of aseptic technique. Technicians should be recertified at regular intervals as dictated by laboratory need or determined by the complexity or risk level performed.(1)

Method of Use: Perform procedures in accordance with USP <797>.(1) The steps below outline the basic manipulation when using this product. Modify the procedure below to simulate the most challenging aseptic manipulations performed at the facility or by the technician. Use appropriate gowning techniques and sanitize or disinfect surfaces and the outside of containers--including ampoules, septa, and bag ports--prior to use. Perform all manipulations inside a laminar airflow clean bench or similar environmentally controlled area using a validated process.

1. Select 20 sterile 18G x 1" needles (or smaller size, as appropriate) and one sterile 3, 5, or 6cc disposable syringe.

2. Aseptically attach a sterile needle to the sterile syringe.

3. Carefully break the top of the ampoule (Cat. no. TSBA) using an ampoule breaker. Draw up the entire volume of the ampoule contents using the syringe.

4. Inject the entire volume of ampoule media into the TSB serum vial (Cat. no. TSB15V) and mix the vial to evenly distribute the contents.

5. Withdraw 1.0mL of media from the TSB serum vial (Cat. no. TSB15V) and aseptically inject this into the port on the TSB Bag (Cat. no. TSB100B).

6. Aseptically change the needle after this exchange to increase the complexity of the manipulations using the "worst case scenario" approach. Use the same syringe throughout the test.

7. Repeat the procedure (in step #5), changing the needle after each transfer from the TSB serum vial (Cat. no. TSB15V) to the TSB Bag (Cat. no. TSB100B), using the remaining needles, as needed. The final transfer should empty the contents of the TSB serum vial (Cat. no. TSB15V) and there will be approximately 118mL in the TSB Bag (Cat. no. TSB100B).

8. Immediately inspect the TSB Bag (Cat. no. TSB100B) for visible particulates, corings, or fibers and note these, if present. The presence of these particles should not be recorded as microbial growth at the end of the test.

9. Label the TSB Bag (Cat. no. TSB100B) and incubate at 20-25°C or 30-35°C for a total of 14 days in compliance with USP <797>.(1)

10. Examine the media daily for turbidity (cloudiness) or the formation of a precipitate or visible signs of growth at the top of the broth. If turbidity, growth or precipitation is observed during the incubation period, this is a positive test and indicative of a failure in aseptic technique. If the media remains clear through the incubation period, this is indicative of a negative test and verification of acceptable aseptic skills.

11. At the end of 14 days, record results and discard the test, as needed.


Visible growth or turbidity observed on or before 14 days of incubation is a positive test for the presence of microorganisms. If positive, the test has failed and indicates a non-sterile technique was used.

No visible growth or turbidity observed in 14 days indicates a negative result and the technique used during the test was aseptic.


Rare, fastidious microorganisms may not grow on general non-selective media formulations.

Failure to perform gowning procedures or to adequately sanitize or disinfect surfaces or the outside of containers--including ampoules, septa, and bag ports--prior to use may result in growth during the incubation window or a failed test.


Standard microbiological supplies and equipment such as sterile 18G x 1" needles, sterile disposable syringes, ampoule breaker, sterile gauze pads, other culture media, incinerators, incubators, etc., as well as sanitizers and disinfectants are not provided.


Test Organisms Inoculation Method* Incubation Results
Time Temperature Atmosphere
For Cat. no. TSBA, TSB Red, 3mL Ampoule:
Staphylococcus aureus
ATCC® 25923
A 24hrs 30-35°C Aerobic Growth; turbidity
Escherichia coli
ATCC® 25922
A 24hrs 30-35°C Aerobic Growth; turbidity
Aspergillus brasiliensis
ATCC® 16404
A 1-5 days 30-35°C Aerobic Growth; turbidity
For Cat. nos. TSB15V, TSB, USP, 15mL and TSB100B, TSB, USP Bag, 100mL:
Staphylococcus aureus
ATCC® 6538
J 24-72hrs 30-35°C Aerobic Growth
Pseudomonas aeruginosa
ATCC® 9027
J 24-72hrs 30-35°C Aerobic Growth
Bacillus subtilis
ATCC® 6633
J 24-72hrs 30-35°C Aerobic Growth
Candida albicans
ATCC® 10231
J 3-5 days 20-25°C Aerobic Growth
Aspergillus brasiliensis
ATCC® 16404
J 5 days 20-25°C Aerobic Growth



The HardyVal™ MTK (Multiple Technician Verification Kit) contains the following components:

Tryptic Soy Broth (TSB) Red, Ampoule, 3mL should appear clear and red in color.

Tryptic Soy Broth (TSB), USP, 20ml serum vial with needle-port septum, 15mL should appear clear and light amber in color.

TSB, USP Bag, 100mL should appear clear and light amber in color.

***Components inside the kit may have different lot numbers and expiration dates. The expiration date of the
completed kit is based on the component with the shortest shelf life. Quality Control testing was performed on the kit lot components, as stated above.


1.United States Pharmacopoeia and National Formulary (USP-NF). Rockville, MD: United States Pharmacopeial Convention.

ATCC is a registered trademark of the American Type Culture Collection.


Results Log

Name:                                                                                         Date Test Performed:                                 

Signature:                                                                 Kit lot#:                     Kit Expiration Date:                       

Date Sample# Initials Hood/
Sample/ Process Tested TSB Bag Lot# Inoc. Temp1 Results
Negative Positive  Organism ID
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1. Recommended incubation period is 14 days and incubation temperature is 20-25oC and/or 30-35oC per USP <797>