Soil Available Boron Content Assay Kit (Micro Method)

Cat. No.: S1522106

QUALITÀ & PUREZZA BioReagent

Panoramica

The availability of boron in the soil directly affects plant uptake and utilization. This product provides a simple, convenient, and rapid method for determining available boron content in soil, suitable for soil samples. The principle is that boron reacts with azomethine-H under weak acidic conditions to form a brownish-yellow complex, which has a characteristic absorption peak at 420 nm.

Specifiche

Specifiche e purezza

BioReagent

Grado

BioReagent

Applicazione

Cell Metabolism

Tipo di campione

Terreno

Metodo di rilevamento

Colorimetric Method

Detection instrument

Microplate reader,Visible Spectrophotometer

Detection wavelength

420nm

Stoccaggio e spedizione

Condizioni di conservazione di stoccaggio

Store at 2-8°C,Protected from light

Spedito in

Wet ice

Stabilità e conservazione

Store at 2-8℃ for 6 months. Store in the dark.

Application Protocols

A general, literature-based micro colorimetric workflow is outlined for context. Follow the official kit instructions for authoritative steps, reagent preparation, and QC.

General micro-method outline (literature; not item-specific):

1. Sample preparation: Air-dry soil, sieve (<2 mm). Weigh into tubes or deep-well plate.
2. Extraction: Add a validated extractant (e.g., water or 0.01–0.02 M CaCl2) at the prescribed soil:solution ratio. Agitate or heat per method. Clarify by centrifugation/filtration.
3. Standards/QC: Prepare boron standards in extractant or matrix‑matched blank. Include reagent blank and mid‑range QC.
4. Color development: Pipette aliquots of standards, blanks, and samples into a microplate or microcuvettes. Add chromogenic reagent(s) and buffer to final volume. Incubate for the specified time, protected from light if required.
5. Readout: Measure absorbance at the method’s wavelength with appropriate reference. Apply blank correction.
6. Calculations: Generate calibration curve, interpolate sample concentrations, correct for dilution factors and soil:solution ratios to report mg B/kg soil.
7. QA/QC: Assess linearity, replicate precision (%RSD), spike recovery, and control charting.

Item-specific volumes, incubation times, reagent names/concentrations, and detection wavelength are Not specified for this item; refer to the included protocol and CoA.

Biological Roles

Context for the analyte (boron) in plant/soil systems (general literature; not item-specific):

• Boron is an essential micronutrient for higher plants. It plays key roles in cell wall architecture via diester cross-linking of rhamnogalacturonan II (RG‑II) domains, influencing wall integrity and growth.
• It contributes to membrane function, phenolic metabolism, pollen tube growth, and reproductive development through effects on carbohydrate transport and signaling.
• The range between deficiency and toxicity is narrow; plant-available boron in soils depends on pH, texture, organic matter, moisture, and competing ions.
• In soils, boron exists mainly as undissociated boric acid (B(OH)3) at acidic to neutral pH, transitioning to borate anion (B(OH)4−) as pH increases (pKa ~9.2 at 25°C; literature). Sorption to clay minerals and oxides and complexation with organic matter regulate its mobility and bioavailability.

Relevance to this kit:

• The kit quantifies the extractable/available fraction operationally defined by the chosen extraction and colorimetric method, supporting studies in plant nutrition, soil amendment evaluation, and environmental monitoring.

Note: No medical or clinical claims are made. This product is for research use only, consistent with the Product Data.

Buffer Applications

This product is an analytical assay kit rather than a buffering reagent. Traditional buffer system selection (e.g., phosphate, Tris, Good’s buffers) is not the primary focus.

• If the kit includes ready-to-use buffers, use them as provided to ensure correct color development and stability. Specific buffer composition and pH are Not specified for this item; refer to the kit instructions/CoA.
• For sample extraction, literature protocols use water, dilute CaCl2, or mild acids; these act as extractants rather than biochemical buffers. Choose extractants consistent with your method validation goals.

For pH control in ancillary steps (general guidance):

• If pH adjustment is required for soil extracts before color development, employ low-boron, low-absorbance acids/bases and verify no spectral overlap with the chromophore employed.

Refer to the kit booklet for any buffer preparation or adjustment details specific to the included chemistry.

Green Alternatives

While this kit already emphasizes micro-scale (reduced volume) operations, additional green chemistry considerations can further lower environmental footprint.

Comparison of common extractants and approaches (literature; not item-specific):

• Hot water extraction: Minimal chemical load; energy input required for heating. Good alignment with green principles when energy sources are efficient.
• Dilute CaCl2 (0.01–0.02 M): Benign salt solution with low hazard profile; effective for plant-available fractions. Waste is generally nonhazardous (confirm locally).
• Dilute mineral acids (e.g., 0.05 M HCl): Improved extraction efficiency in some soils but introduces corrosivity and neutralization/waste concerns.

Greener practice recommendations:

• Prefer aqueous, low-ionic-strength extractants compatible with your agronomic question to minimize hazardous waste.
• Adopt microplate reading (short pathlength) and miniaturized reaction volumes to reduce reagent consumption—consistent with the “micro method” concept.
• Replace borosilicate glass with durable polypropylene to reduce boron leaching and breakage waste.
• Consolidate washes and use multi-channel pipetting to reduce disposable tip usage; select recycled-content plastics where validated.
• Implement calibration with reusable multi-use standards where stability allows; prepare only the volume needed per run to minimize discard.

Trade-offs:

• Some greener extractants may yield different “availability” metrics; document and justify extractant choice for comparability. Ensure any alternative still meets your method performance criteria (LOD, linearity, recovery).

Pharmaceutical Uses

Not applicable. This is a soil analysis assay kit for research and laboratory use and is not formulated as a pharmaceutical or excipient product.

• Pharmacopeial status: Not applicable.
• Formulation roles: Not applicable.

Use is limited to research applications (For research use only, per Product Data). No therapeutic, diagnostic, or clinical claims are made or implied.

Physical Properties

As a multi-reagent analytical kit, classical single-compound physical constants do not apply.

Item-specific properties:

• Appearance: Not specified for this item; refer to CoA/Spec Sheet.
• Molecular formula / Molecular weight: Not applicable (kit contains multiple components).
• pH of buffers/reagents: Not specified for this item; refer to CoA/Spec Sheet.
• Solubility: Aqueous reagents are typically water-soluble; any organic components (if present) will be supplied ready-to-use or with instructions. Not specified for this item; refer to CoA/Spec Sheet.
• Refractive index, density, BP/MP, logP, UV cutoff: Not applicable/Not specified for this item; refer to CoA/Spec Sheet.

General literature values (for context; not item specifications):

• Common soil boron extractants include hot water, 0.01–0.02 M CaCl2, or 0.05 M HCl; color development is typically monitored at visible wavelengths depending on the chromophore employed.
• Typical calibration ranges for micro colorimetric boron assays are in the low ppm to sub-ppm range in the final reaction mixture, but the working range depends on reagent chemistry and pathlength.

Always consult the included protocol and CoA for any component-specific physicochemical information and compatibility.

Quality and Grades

• Grade: BioReagent (from Product Data). This denotes reagents suitable for biological and biochemical workflows, with attention to impurities that can interfere with colorimetric detection and enzymatic processes. While not equivalent to clinical diagnostic grade, BioReagent-grade components are formulated and packaged to support reproducible research assays.

What this means in practice:

• Lower background: Components are selected and processed to minimize contaminants that could contribute to baseline absorbance or chelate boron nonspecifically.
• Batch documentation: Certificate of Analysis (CoA) and/or Specification Sheet typically include acceptance criteria (e.g., blank absorbance limits, standard curve linearity). For this item, specific acceptance metrics are Not specified; refer to CoA/Spec Sheet.
• Light protection: The kit is stored protected from light to preserve chromophores and standards.
• Traceability: Lot numbers should map to internal QA records enabling reproducibility across studies.

Stabilizers and preservatives:

• Presence/identity of any stabilizers, biocides, or antioxidants is Not specified for this item; refer to CoA/Spec Sheet. If present, they are chosen to be compatible with boron colorimetry and low in UV/Vis background.

Comparison to general analytical grades (context):

• Versus Technical grade: tighter control of impurities and documented performance in analytical workflows.
• Versus HPLC grade: this kit is application-formulated; solvent UV cutoffs are not relevant unless the protocol specifies organic cosolvents (not specified here).

Reaction and Applications

Primary application: quantitative determination of plant-available boron in soil extracts using a micro-scale colorimetric method.

Use cases (research only):

• Soil fertility research, nutrient cycling studies, and agronomic screening of amendments for effects on extractable boron.
• Method development/validation across extractants (e.g., water vs CaCl2), soils, and textures.
• High-throughput screening using microcuvettes or 96-well plates to minimize sample/reagent consumption.

General methodological notes (literature; not item-specific):

• Chromogenic chemistries: Boron is commonly complexed with dyes such as azomethine‑H (absorbance ~410–420 nm) or curcumin to form rosocyanine (~540–560 nm). Reaction stoichiometry, pH, and timing govern sensitivity and selectivity.
• Interferences: Iron, aluminum, and humic substances may affect color yield; masking agents (e.g., EDTA) or matrix-matched calibration are used in some methods.
• Linearity and range: Micro methods typically support low-µM boron in the assay well; dilution of extracts extends the range. Validate with spike recoveries.

Practical tips:

• Use boron-free consumables when possible; avoid prolonged contact with borosilicate glass for standards and low-level samples.
• Prepare fresh working reagent(s) and standards daily to control drift.
• Include reagent blanks, calibration blanks, and at least one quality control level per plate/run.

Manufacturer Applications: Provided in catalog as a header only; no additional specifics. Researchers should apply the kit to soil boron determinations consistent with institutional method SOPs.

Reaction Conditions

Representative workflow parameters for colorimetric soil boron assays are provided here for context only (literature/general guidance; not item-specific). Always follow the kit’s official protocol.

• Extraction: Mix air‑dried, sieved soil (e.g., 2–5 g) with a chosen extractant (e.g., hot water, 0.01–0.02 M CaCl2, or 0.05 M HCl) at a defined ratio; shake 30–60 min or heat as specified; filter or centrifuge. The extractant choice dictates the operationally defined “available boron.”
• Color development: Combine an aliquot of clear extract with chromogenic reagent(s) and buffer to a fixed final volume in microcuvettes or 96‑well plates. Typical color development times range 15–60 min at ambient temperature; protect from light if required by the dye chemistry. Wavelength selection depends on the chromophore (e.g., ~410–420 nm for azomethine‑H; ~540–560 nm for curcumin complexes; literature values).
• Calibration: Prepare a matrix‑matched standard curve spanning the expected concentration range of boron in the reaction mixture. Include a reagent blank and at least one QC level.
• Interference control: Consider masking agents for polyvalent cations, and clarify turbid extracts by centrifugation/filtration to minimize scattering.
• Data treatment: Apply blank correction; verify linearity (R2 ≥ 0.995 typical target) and perform spike recoveries (80–120% typical acceptance, method-dependent).

Item-specific conditions (reagent volumes, incubation times, wavelengths) are Not specified for this item; refer to the kit booklet/CoA.

Safety and Handling

Follow standard laboratory safety practices for handling analytical reagents and soil extracts.

Item-specific safety data:

• GHS classification, signal word, hazard statements, pictograms: Not specified for this item; refer to the SDS for each component.
• Storage: Store at 2–8°C, protected from light (from Product Data). Shipments are on wet ice.

General safety guidance (literature/best practice; not item-specific):

• Potential hazards: Colorimetric boron reagents may contain acids, aldehydes, aromatic amines, chelators, or preservatives. Treat all liquids as irritating or harmful upon ingestion/skin/eye contact until SDS confirms otherwise.
• PPE: Lab coat, safety glasses or face shield, and appropriate chemically resistant gloves (e.g., nitrile). Work in a fume hood when handling concentrated reagents or acids.
• Incompatibilities: Avoid mixing acidic and basic components unless directed by the protocol. Keep oxidizers, strong acids/bases, and reducing agents segregated per SDS guidance.
• First aid (overview): In case of skin/eye contact, rinse with copious water for at least 15 minutes and remove contaminated clothing. If inhaled, move to fresh air. If ingested, do not induce vomiting; seek medical attention. Always reference the SDS for definitive measures.
• Waste: Collect used reagents and soil extracts according to local regulations. Some chromogenic reagents and preservatives may be hazardous waste.

Always defer to the component SDS and institutional EHS procedures for authoritative guidance.

Solvent Selection

This is an aqueous colorimetric assay kit; classical solvent selection is not typically required beyond what the kit provides.

Item-specific guidance:

• Supplied buffers/reagents (if included) should be used as provided. Substituting solvents or diluents can change color yields and calibration. Exact compositions are Not specified for this item; refer to kit instructions.

General literature context (for soil boron testing):

• Extractants: Water, dilute CaCl2 (0.01–0.02 M), or mild mineral acids are commonly used to assess plant-available boron. Selection affects measured availability and matrix effects; choose extractant consistent with your method and comparability requirements.
• Measurement: Color development is typically performed in aqueous media. Small percentages of alcohols may be used in some literature protocols to aid chromophore solubility; use only if validated.

Practical tips:

• Use ultrapure water (18 MΩ·cm) to minimize background and trace boron contamination from glassware.
• Pre-rinse plasticware and cuvettes/plates with assay diluent to minimize adsorption.
• Avoid borosilicate glass in critical steps; use high-quality polypropylene or Teflon where practical to reduce boron leaching (literature best practice).

If deviations from the supplied reagents are necessary, validate recovery and linearity with matrix-matched standards.

Storage and Reconstitution

• Storage conditions: Store at 2–8°C, protected from light (from Product Data). Do not freeze unless explicitly instructed for a particular component. Keep containers tightly closed to minimize evaporation and contamination.
• Shipping: Shipped on wet ice (from Product Data). Inspect upon receipt; if components are warm, consult the kit instructions for stability allowances.
• Light sensitivity: Many chromogenic reagents and standards are light-sensitive. Minimize ambient light exposure and return reagents to cold, dark storage immediately after use.
• Reconstitution: If any components are supplied lyophilized or as concentrates, follow the vial label/kit booklet for solvent, volume, and mixing method. For this item, specific reconstitution instructions are Not specified; refer to kit instructions/CoA.
• Aliquoting: For standards or labile reagents, prepare single-use aliquots to avoid repeated freeze–thaw or prolonged bench exposure (general best practice).
• Equilibration: Allow cold-stored reagents to equilibrate briefly to room temperature before opening to prevent condensation ingress; mix gently to ensure homogeneity and avoid bubble formation in microplate assays.
• Stability/expiry: Use within the labeled shelf life. Open-vial stability and working reagent pot-life are Not specified for this item; refer to kit booklet/CoA.

Always consult the kit manual for component-specific storage, preparation, and disposal instructions. Product is for research use only.

Structure and Identity

This product is an analytical kit for quantifying plant-available boron in soils using a micro-scale colorimetric workflow. It is a multi-component formulation rather than a single defined chemical entity.

• Item type: Assay kit (soil nutrient analysis; micro method)
• SKU: S1522106
• Grade/Purity: BioReagent (from Product Data)
• Compound identifiers (molecular formula, MW, SMILES, InChIKey): Not applicable to a multi-reagent kit. Not specified for this item; refer to CoA/Spec Sheet.
• Structural features: Not applicable; the kit comprises buffers/reagents and standards suitable for a colorimetric determination of boron.

General literature context (not item-specific):

• Soil-available boron is commonly quantified via formation of a boron–chromophore complex measured spectrophotometrically (e.g., azomethine-H at ~410–420 nm or curcumin/rosocyanine at ~540–560 nm). Specific chemistry for this kit is not specified; consult the kit booklet.
• “Micro method” typically denotes reduced reaction volumes (e.g., microcuvette or 96-well plate formats) to minimize sample and reagent consumption while maintaining sensitivity.

Synthetic Utility

Not applicable. This product is not a synthetic building block or reagent but a multi-component analytical kit for colorimetric quantification of plant-available boron in soils.

• For chemical synthesis involving boron compounds (general knowledge), specialized reagents such as boronic acids/esters, boranes, or borates are typically employed; these are unrelated to this assay kit’s use case.

Researchers interested in synthesis should refer to dedicated boron reagents elsewhere in the catalog.

Target Specificity

This product is not an antibody or affinity reagent; classical biological target specificity (antigen/epitope, clone, isotype) does not apply.

• Analytical specificity (assay context): The colorimetric chemistry is designed to report on boron in soil extracts. Specificity against potential interferents (e.g., Fe, Al, humic substances) depends on the chosen chromophore, pH, and masking strategy (literature context). The exact selectivity profile for this kit is Not specified; refer to kit documentation and SDS.

For quantitative soil nutrient analysis, validate specificity in your matrix with spike/recovery, dilution linearity, and, where possible, comparison against an orthogonal method (e.g., ICP‑OES for total B on digests) recognizing that extract-based methods measure different fractions.