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. 2019 Jun 20;10:2720. doi: 10.1038/s41467-019-10776-y

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Fig. 4 — Procurement for PRDH laboratory needs (includes all facilities). Procurement was classified by product type and % of the total number (a) or cost (b) of items ordered. Items were grouped into the following categories: consumables (e.g., plasticware, shipping and packing materials, office supplies); equipment (e.g., refrigerators, freezers, pH meters); reagents (e.g., buffers, reagents, calibration standards); services (e.g., repair, installation, certification, calibration, preventative maintenance contracts; in many cases, more than one instrument was serviced at a time)