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A shortage of coronavirus testing supplies is creating a bottleneck for patients needing to be tested globally. These supplies include the Viral Transport Medium (VTM) or Universal Transport Medium (UTM).

1st BASE is ramping up the manufacturing of Dulbecco’s Phosphate Buffered Saline (DPBS)*, an alternative to VTM/UTM, to support these shortages.
Dulbecco’s Phosphate Buffered Saline (DPBS) is a water-based salt solution with a specific formulation that is able to maintain the genetic information of the virus prior to testing.
* This product is also RAVE (Rapid Automated Volume Enhancer) compatible.
Product Code CUS-7021-1X
Identifier 1X Dulbecco’s Phosphate Buffered Saline (DPBS)
Grade Biotechnology
Formulation Contains 137mM Sodium Chloride, 2.7mM Potassium Chloride, 8.1mM Sodium Phosphate, Dibasic and 1.5mM Potassium Phosphate, Monobasic and 10mg/L Phenol Red at 1X concentration.
Storage Condition Store at room temperature (25°C - 30°C).
  Downloads
Product Specification Sheet
Safety Data Sheet
Intended Use

Designed for collection, transportation and short-time storage of clinical specimen, total DNA/RNA of saliva, blood, serum, stool and body fluid, etc. The stored samples can be used in subsequent clinical experiments such as DNA/RNA extraction, PCR testing or sequencing.

Instructions for Use

Prior to use, perform a quick visualization check on the solution. As the solution consists of Phenol Red as a pH indicator, tubes that display any color beyond the acceptable pH range should NOT be used (Figure 1).

The 1X DPBS is suitable for the transport of nasal and oropharyngeal swab samples. Use the 1X DPBS according to your application needs.

  1. Collect the sample (e.g. using a nasopharyngeal swab) according to respective internal protocols.
  2. Place the sample in the tube, cap tightly, label accordingly, and transfer the tube for further testing.
  3. Transportation of sample
    • Label and pack samples according to local health authorities, and (IATA) Dangerous Goods Regulation.
    • Transport samples between 25°C - 30°C.
    • Stability of samples is maintained up to 48 hours at 25°C - 30°C.
  4. Storage of sample upon arrival to facility
    • Store samples between 2°C – 8°C if downstream application is performed within 48 hours.
    • If downstream application (RNA extraction) is not performed within 48 hours, store samples in -80°C.Precautions and DisclaimerFor transport of specimens only. Not to be taken internally.The 1X DPBS is not intended for therapeutic use.For PCR use only.


Precautions and Disclaimer

For transport of specimens only. Not to be taken internally.
The 1X DPBS is not intended for therapeutic use.
For PCR use only.

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