Biochemical Reagents Documentation¶
Solarbio general biochemical reagents for routine laboratory use including buffers, small molecules, analytical standards, and staining solutions.
Scope¶
Solarbio biochemical reagents serve as the foundational consumables for molecular biology, cell biology, analytical chemistry, and histology workflows. Each product is manufactured under ISO 9001:2015 quality management with lot-specific testing and COA documentation.
Why Choose Solarbio Biochemical Reagents¶
- All buffers and solutions: 0.1 µm filtered, DNase/RNase-free, and endotoxin-tested
- Small molecules supplied with HPLC purity data and NMR identity confirmation
- Analytical standards certified to ISO 17034 reference material producer requirements
- Staining dyes tested on control tissue sections and validated for specific staining patterns
- Economical bulk packaging available (1 L, 5 L, 25 L for buffers; 100 mg, 500 mg for small molecules)
- Lot-to-lot consistency guaranteed with quantitative release specifications
Product Categories¶
| Category | Product Examples | Typical Use | Quality Grade | SKU Count |
|---|---|---|---|---|
| Buffers & Solutions | D-PBS, TBE, TAE, SSC, Tris-HCl | Electrophoresis, cell washing, hybridization | DNase/RNase-free | 30+ |
| Small Molecules | Inhibitors, agonists, probes, natural products | Cell signaling research, enzyme modulation | ≥95% HPLC purity | 100+ |
| Analytical Standards | HPLC standards, reference materials | Method validation, calibration curves | ≥99.0% (analytical grade) | 50+ |
| Staining Dyes | Hematoxylin, eosin, DAPI, PI, Oil Red O | Histology, fluorescence microscopy | ≥90–98% purity | 25+ |
Decision Matrix — Who Should Use Which Category¶
| Your Role | Primary Category | Secondary Category | Typical Workflow |
|---|---|---|---|
| Molecular biologist (DNA/RNA) | Buffers & Solutions | Staining Dyes | TAE/TBE for gels → DAPI/EtBr for visualization → SSC for blots |
| Cell biologist (signaling) | Small Molecules | Buffers & Solutions | Prepare inhibitor in DMSO stock → dilute in culture medium (DMEM + HEPES) → treat cells → lyse for analysis |
| Cell biologist (culture) | Buffers & Solutions | Small Molecules | PBS for washing → medium + HEPES → test compound from small molecules |
| Analytical chemist (method dev) | Analytical Standards | Small Molecules | Certified reference standard for calibration curve → impurity standard for specificity |
| QC analyst (compendial testing) | Analytical Standards | — | Pharmacopoeia-grade standard per USP/EP/ChP → monograph method → release testing |
| Histologist / pathologist | Staining Dyes | Buffers & Solutions | H&E staining → eosin and hematoxylin → PBS wash between steps |
| Immunologist (ELISA/flow) | Buffers & Solutions | Small Molecules | TBS-T for wash → PBS for cell suspension → inhibitor or probe for functional assay |
| Food safety analyst | Analytical Standards | — | Pesticide/mycotoxin standard → spike into food matrix → LC-MS/MS quantitation |
| Pharmacologist (in vivo) | Small Molecules | Analytical Standards | Compound preparation → dosing → bioanalysis using analytical standard |
| New lab setup (generalist) | Buffers & Solutions | Staining Dyes, Small Molecules | Start with PBS, TAE, Tris buffers → add H&E, DAPI → build inhibitor library |
Bulk Packaging Options¶
Solarbio offers economical bulk packaging and custom volume sizing for high-throughput labs.
| Category | Standard Bulk Sizes | Price Code | Lead Time | Savings vs Standard |
|---|---|---|---|---|
| Buffers (1× or concentrate) | 1 L, 5 L cubitainer, 10 L, 25 L HDPE drum | BULK-PBS, BULK-TAE, BULK-TBE | 3–5 business days | 15–30% |
| Small molecules (≥100 mg) | 100 mg, 500 mg, 1 g, 5 g | BULK-SM-100, BULK-SM-500, BULK-SM-1G | 5–10 business days | 20–40% |
| Analytical standards (multi-vial) | 5× 10 mg, 5× 50 mg kit | BULK-STD-KIT | 3–7 business days | 10–20% |
| Staining dyes (histology) | 1 L hematoxylin, 1 L eosin | BULK-HE | 5–7 business days | 20–35% |
| Bulk buffer concentrate (50× TAE, 10× TBE) | 5 L, 10 L, 25 L, IBC tote (200 L) | BULK-CONC | Contact sales (volume pricing) | 30–50% |
To order bulk: Append the BULK price code to the standard SKU (e.g., P1010-BULK-PBS for 5 L PBS). Volume pricing for orders above 50 L or 5 g of small molecules is available through the sales team at [email protected].
Custom Buffer Formulation — Ordering Workflow¶
Solarbio accepts custom buffer formulation requests for laboratories with specific ionic composition, pH, osmolality, or additive requirements.
Workflow Steps¶
- Submit specification request via solarbio.store or email [email protected] using the template: (a) buffer name, (b) final volume required, (c) component list with mM or g/L, (d) target pH ± tolerance, (e) target osmolality (if applicable), (f) preferred packaging, (g) sterility requirement (0.1 µm or 0.22 µm filtered), (h) endotoxin limit if <0.5 EU/mL needed.
- Technical review (2 business days): Our formulation team reviews the components for compatibility issues (e.g., Ca²⁺/Mg²⁺ precipitation risk with phosphate, microbial growth potential with glucose-containing buffers).
- Quotation: A custom SKU is created with per-lot pricing. Minimum order: 1 L for simple buffers, 5 L for complex formulations.
- Manufacturing (5–10 business days): ISO 9001:2015 controlled production with in-process pH and conductivity checks.
- Release testing: pH ± 0.1, osmolality ± 5%, conductivity ± 5%, sterility (if specified), endotoxin (if specified), DNase/RNase (if specified).
- COA delivery: Electronic COA with all measured values, lot number, and expiry date.
Supported custom additives: EDTA, EGTA, DTT, TCEP, PMSF, protease inhibitor cocktail, sodium azide (0.02%), glycerol (up to 50% v/v), sucrose, Triton X-100, Tween 20, SDS, BSA (up to 5%). Any additive compatible with 0.1 µm or 0.22 µm filtration can be included.
Cross-Reference: Which Buffer for Which Downstream Application¶
| Downstream Method | Recommended Buffer(s) | See Also |
|---|---|---|
| DNA agarose gel electrophoresis | 1× TAE, 0.5× TBE | Electrophoresis Reagents |
| RNA gel electrophoresis | 1× MOPS (formaldehyde gel) | Electrophoresis Reagents |
| Western blot — transfer | 1× Tris-glycine-SDS transfer buffer | Electrophoresis Reagents |
| Western blot — wash | 1× TBS-T, 1× PBS-T | Immunodetection |
| ELISA | 1× PBS-T (wash), carbonate buffer (coating) | Assay Kits |
| Cell culture | HEPES-buffered DMEM/RPMI, 1× PBS (wash) | Cell Culture Media |
| Southern/Northern blot | 20× SSC, 20× SSPE | Molecular Biology Methods |
| Immunofluorescence / ICC | 1× PBS, 1× TBS | Staining Dyes, Cell Biology |
| Immunohistochemistry (IHC) | 1× PBS, citrate buffer (antigen retrieval) | Staining Dyes |
| Flow cytometry | 1× PBS (cell suspension), FACS buffer (PBS + BSA) | Cell Biology |
| Protein purification (IMAC) | 50 mM Tris, 300 mM NaCl, pH 8.0 | Protein Analysis |
| Chromatography (HPLC) | Mobile phase | Analytical Standards |
| Enzyme activity assay | 50–100 mM Tris or HEPES at pH 7.0–8.0 | Assay Kits |
Quality Grade Comparison Table¶
| Feature | Buffers & Solutions | Small Molecules | Analytical Standards (Analytical Grade) | Analytical Standards (Research Grade) | Staining Dyes |
|---|---|---|---|---|---|
| Purity target | Formulation-controlled | ≥95% HPLC | ≥99.0% HPLC | ≥95% (HPLC) | ≥90% (HPLC) |
| Identity confirmation | pH, conductivity, osmolality | NMR + MS | NMR, MS, IR, melting point | ¹H NMR, HPLC retention | UV-Vis, ¹H NMR |
| Moisture (KF) | N/A | <0.5% | <0.5% | <1.0% | <1.0% |
| DNase/RNase tested | Yes (not detectable) | N/A | N/A | N/A | N/A |
| Endotoxin tested | Yes (<0.5 EU/mL) | N/A | N/A | N/A | N/A |
| Sterility | 0.1 µm filtered | N/A | N/A | N/A | N/A |
| Heavy metals | N/A | <10 ppm (ICP-MS) | <5 ppm (ICP-MS) | <20 ppm | <20 ppm |
| Residual solvents | N/A | ICH Q3C Class 2 <50 ppm, Class 3 <5000 ppm | ICH Q3C compliant | <5000 ppm | N/A |
| Uncertainty reported | N/A | N/A | Yes (k=2, 95% CI) | No | N/A |
| Pharmacopoeia alignment | USP-grade water, USP/EP-grade raw materials | N/A | Full monograph compliance | Not required | N/A |
| COA content | pH, conductivity, osmolality, endotoxin, sterility | HPLC chromatogram, NMR summary | Full: HPLC, NMR, MS, KF, residual solvents, heavy metals | HPLC trace + ¹H NMR | UV-Vis spectrum, NMR summary |
| Shelf life | 24 months | 24 months | 36 months | 24 months | 12–24 months |
| Storage | RT (15–30°C) | −20°C (inert gas) | 2–8°C or RT | −20°C or RT | RT or −20°C |
| COA download | Yes (lot lookup) | Yes (lot lookup) | Yes (lot lookup) | Yes (lot lookup) | Yes (lot lookup) |
| Lot tracking | Full traceability | Full traceability | Full traceability + re-certification | Full traceability | Full traceability |
Quality Specifications by Category¶
| Parameter | Buffers & Solutions | Small Molecules | Analytical Standards | Staining Dyes |
|---|---|---|---|---|
| Purity | N/A (formulation) | ≥95% (HPLC) | ≥99.0% (analytical); ≥95% (research) | ≥90% (HPLC) |
| Identity confirmation | pH, conductivity, osmolality | NMR (¹H, ¹³C), MS | NMR, MS, IR, melting point | UV-Vis spectrum, NMR |
| DNase/RNase | Not detectable | N/A | N/A | N/A |
| Endotoxin | <0.5 EU/mL | N/A | N/A | N/A |
| Sterility | 0.1 µm filtered | N/A | N/A | N/A |
| Moisture (Karl Fischer) | N/A | <0.5% | <0.5% | <1.0% |
| Heavy metals | N/A | <10 ppm | <5 ppm | <20 ppm |
| Storage | 15–30°C (most) | −20°C (inert gas) | 2–8°C or RT | RT or −20°C (light-sensitive) |
| Shelf life | 24 months | 24 months | 36 months | 12–24 months |
Recommended Storage and Handling¶
- Buffers: Store at room temperature (15–30°C) unless otherwise labeled. After opening, store 2–8°C for buffers containing biological components (e.g., PBS with Ca²⁺/Mg²⁺).
- Small molecules: Keep sealed under inert gas; desiccate at −20°C. Light-sensitive compounds should be stored in amber vials.
- Analytical standards: Store in original container, tightly sealed. Desiccate where moisture sensitivity is indicated.
- Staining dyes: Protect from light. Hematoxylin and eosin at RT; fluorescent dyes at −20°C.