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Performs laboratory unit conversions across molarity, OD600 cell density, C₁V₁ dilution, and related dimensional pairs from mass, volume, molecular weight, and organism-specific OD factors. A browser calculator combines four modes in one tabbed workspace with compound MW lookup, species-aware OD uncertainty ranges, cross-tab chaining, and shareable links; a Python library and command-line tool submit the same parameters to the Pepkio Tools API for scripted use. Calculator arithmetic for the API client is hosted remotely; the client transmits conversion inputs and returns structured results and shareable run identifiers.

Translates spectrophotometer and NanoDrop readings into mass and molar concentrations for dsDNA, ssDNA, ssRNA, and protein from a single anchor input, with optional sequence-specific nearest-neighbor extinction coefficients. A browser calculator supports bidirectional unit conversion, batch processing of up to ninety-six NanoDrop export rows, and A260/A280 purity interpretation with plain-language warnings; a REST API exposes converter, batch, and purity modes for scripted use. Calculator arithmetic is hosted remotely; API clients transmit parameters and return structured result fields and shareable run identifiers.

Calculates sequence-derived molecular properties and related laboratory planning outputs from FASTA and assay setup inputs. The tool supports sequence analysis for DNA, RNA, and protein entries, plus dilution and ligation calculation modes through one API-backed workflow. Programmatic use is available through a Python library and command-line interface that submit run payloads and return structured result objects.

Translates between centrifuge RPM and relative centrifugal force using rotor geometry, reporting g-force or speed at rmin, ravg, and rmax. Convert mode handles rpm_to_rcf and rcf_to_rpm with rotor presets or manual radii in mm; transfer mode maps a source RPM on one rotor to an equivalent target RPM at matched rmax RCF; batch mode processes multiple spin steps from CSV or row arrays. A browser calculator and a Python library with command-line interface submit the same parameters to the Pepkio Tools API and return structured results with optional methods text and safety warnings.

Processes 96-well plate absorbance data through blank subtraction, regression fitting, and dilution correction to report sample concentrations with QC flags for BCA, Bradford, and ELISA workflows. A browser calculator supports interactive grid entry with CSV and PDF export; a Python library and command-line tool submit the same parameters to the Pepkio Tools API for scripted and pipeline use. Calculator arithmetic is hosted remotely; the client transmits plate layout and absorbance values and returns model comparison, per-sample concentrations, and shareable run identifiers.

Derives cells per well and suspension pipette volumes for standard 6-, 12-, 24-, 48-, 96-, and 384-well plates from a hemocytometer stock count, trypan blue viability, and target seeding confluency, with QC flags for low viability and impractical transfers. A browser calculator supports interactive planning with cell-line presets; a Python library and command-line tool submit the same parameters to the Pepkio Tools API for scripted and pipeline use. Calculator arithmetic is hosted remotely; the client transmits parameters and returns structured plate tables and shareable run identifiers.

Plans PCR and qPCR master-mix reagent volumes from stock and final concentrations, reaction counts, and pipetting overage, with consolidated totals when several assays are prepared together. A browser calculator supports interactive recipe entry with printable bench sheets; a Python library and command-line tool submit the same parameters to the Pepkio Tools API for scripted and pipeline use. Calculator arithmetic is hosted remotely; the client transmits parameters and returns structured volume tables, dilution warnings, and shareable run identifiers.

Computes laboratory solution preparation parameters—powder mass to weigh, stock and diluent volumes for single dilutions, and multi-step serial concentration tables—with correction for hydrated salts and supplier purity. A browser calculator supports interactive prep planning with saved recipes and shareable links; a Python client and command-line tool submit the same parameters to the Pepkio Tools API for scripted and pipeline use. Calculator arithmetic is hosted remotely; the client transmits parameters and returns structured protocol steps and shareable run identifiers.

Plans geometric serial dilution series for molecular biology and biochemistry workflows, rounding transfer volumes to declared pipette ranges and optional 96- or 384-well plate layouts. A browser calculator supports interactive protocol design; a Python client and command-line tool submit the same parameters to the Pepkio Tools API for scripted and pipeline use. Calculator arithmetic is hosted remotely; the client transmits parameters and returns structured step tables and shareable run identifiers.