After glassware and equipment, a lab requires reagents. This very broad heading comprises acids and alkalis, alcohols, dyes, polymers and enzymes. To a certain extent, there is a feedback effect whereby an existing lab can produce many of its own requirements in-house for continued work or for setting up a new lab. Also, many of these reagents may be considered outputs if desired by the community; alcohols, dyes, polymers and enzymes all have valuable uses in a community for sanitation, textiles, food production and waste degradation, among other things.
Acids and Alkali are needed for their own sake and to produce important salts by reaction with minerals and each other. Alcohols are needed as sterilants and as precipitants for purifying proteins, enzymes, DNA, and other compounds. Dyes are needed for diagnostic differentiation between bacterial species, and for staining DNA in molecular work. Polymers are needed for producing bacterial growth plates, electrophoretic gels for DNA, and for sterilising heat-labile reagents. Enzymes are needed to catalyse reactions such as PCR, to degrade contaminants, and perhaps as an end in themselves (as many industrially significant enzymes may be of use to local communities in green cleaning and food production).
Many chemical needs can be satisfied locally by intelligent substitution, whereas others may present a problem that will need to be addressed over time. Enzyme needs are a problem for which an immediate solution is foreseeable but will be expensive; transgenic strains of laboratory bacteria can be engineered to produce as much enzyme as required for a given application. Polymers may be extracted from locally sourced wild flora such as seaweeds and purified chemically (agars), or might be prepared in like manner to enzymes with transgenic strains of bacteria.
Requirements for a local microbiology lab, which could be used for diagnostic purposes, are achievable today. Methods such as pressure-sterilisation, oven sterilisation and tyndallisation are required to produce sterile growth media for microbes, but can be learned easily once equipment is available. Rich growth media are easily produced using ingredients that can be locally produced or sourced; a simple diagnostic medium such as blood agar can be produced using byproducts from a meat processing facility or butcher.
To produce enzymes and other limiting compounds locally, transgenic strains of laboratory-strain bacteria may need to be developed and protocols for easy extraction will need to be tested.
For example, for production of PCR enzymes for use in PCR diagnostics of locally relevant diseases, it should be feasible to produce the thermostable enzymes used in PCR using a laboratory-domesticated strain of either E.coli or B.subtilis. The enzyme can then be easily purified by boiling cells and filtering the result; the crude lysate will contain the enzyme, which should outlast contaminating enzymes under heat treatment. However, it is not feasible to locally produce such a strain as required, because the gene needed to produce the thermostable enzyme is found in wild cultures of deep-sea, thermophilic bacteria which are practically impossible to locally culture. However, once produced, such a strain can be transferred with trivial ease between AT-biolabs and constitutes a landmark development in sustainable biotechnology.
Dyes actually pose a strong problem for community biolabs. Although many natural dyes can be easily prepared from indigenous species or by fermentation of transgenic strains, most dyes used in a modern lab for essential techniques like DNA visualisation are synthetic and/or present a mutagenic hazard. Substitution with natural stains and dyes may be a matter of trial and error.
Many degradative enzymes can be produced by fermentation of saprophyte species such as B.subtilis, which possesses a host of useful enzymes for breaking down dead plant matter. These enzymes can be used for degrading waste and quickening composting or disposing of awkward wastes such as rancidified oils.
In a biolab, enzymes are the molecular machinery that perform many essential tasks such as copying, modifying and pasting DNA into desired sites, degrading contaminants, binding and purifying specific desired components of mixed samples, or cell-free production of proteins for advanced medical applications.
The below enzymes mostly do not come with instructions or suggestions for sources; the probable route to production in a community lab would be to acquire transgenic strains of B.subtilis or E.coli producing the desired enzyme, from which the enzyme can be extracted after a scaled-to-order fermentation. These strains generally do not exist in a form that is suitable or available to the community lab, but will surely be designed in coming years and disseminated where possible and required.
Essential Lab Enzymes:
Mostly culinary outputs:
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| Cite as | Cathalgarvey (2011–2025). "Biolab Reagents". Appropedia. Retrieved September 28, 2026. |