High Stringency Wash Solution - DNase/RNase free

Cat. No.: H743162

CALIDAD & PUREZA DNase/RNase free

Storage

Store at 2-8°C

Shipped In

Wet ice

Descripción general

Precautions：

If turbidity or precipitation occurs in this product at low temperatures, the solution can be heated appropriately for dissolution and mixed well before use.Avoid RNase contamination during operation. Wear a disposable mask when using this product and minimize its exposure to air. After use, the lid should be immediately covered and tightened.This product is for R&D only. Not for drug, household, or other uses.For your safety and health, please wear a lab coat and disposable gloves during the operation.

Instructions for Use：

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Especificaciones

Especificaciones y pureza

DNase/RNase free

Estabilidad y almacenamiento

Store at room temperature or 4℃ for up to 1 year.

Condiciones de almacenamiento de almacenamiento

Store at 2-8°C

Enviado en

Wet ice

Este producto requiere envío en cadena de frío. Los servicios terrestres y otros servicios económicos no están disponibles.

Application Protocols

The following are general, literature‑based example workflows to guide use. They are not item‑specific performance claims.

A. Post‑hybridization wash (membrane‑based Southern/Northern):

• Remove hybridization buffer and quickly add pre‑equilibrated high‑stringency wash.
• Wash with gentle agitation for 10–15 min; replace with fresh solution and repeat 1–2×.
• Maintain temperature control throughout. Proceed to detection steps once background is acceptably low.

B. In situ hybridization (slides):

• Following probe hybridization, immerse slides in pre‑warmed wash solution.
• Perform sequential washes of 5–10 min, increasing stringency stepwise as needed.
• Avoid slide drying between washes to prevent artifacts.

C. Western blot/ELISA:

• After each antibody incubation, discard liquid and add sufficient wash solution to cover membrane/wells.
• Agitate gently 3–5 times for 3–10 min each; ensure complete coverage and avoid bubble trapping on membranes.

Notes:

• Calibrate stringency by adjusting temperature, ionic strength, and detergent in line with your assay design. For SKU H743162, the exact composition and recommended dilutions (if any) are Not specified for this item; refer to CoA/Spec Sheet.
• Always include appropriate positive/negative controls to judge when sufficient washing has been achieved.

Biological Roles

The solution itself has no intrinsic biological role; it is a tool to modulate biomolecular interactions in experimental systems.

Functional context (general, literature):

• Nucleic acids: High stringency washing favors retention of fully complementary DNA:DNA, DNA:RNA, or RNA:RNA duplexes while removing mismatches. This enables accurate detection of gene sequences, splice variants, or single‑nucleotide differences in hybridization assays.
• Proteins/antibodies: By adjusting ionic strength and including nonionic detergent, the wash reduces nonspecific adsorption and low‑affinity interactions (electrostatic or hydrophobic) that contribute to assay background.
• Cell/tissue preparations: In IHC/ISH, stringent washes help clear unbound probes/antibodies from complex matrices, improving signal‑to‑noise without extensive tissue damage when conditions are properly controlled.

Operational implications:

• Appropriate stringency is central to specificity vs sensitivity tradeoffs; excessive stringency may elute weak but specific interactions, whereas insufficient stringency raises background and false positives.

No clinical or in vivo biological function is implied; this reagent is intended for research use only (per Product Data).

Buffer Applications

This is the primary use domain for High Stringency Wash Solution. Exact composition for this item is not disclosed; the following are general, literature‑based practices.

Nucleic acid hybridization (Southern/Northern/ISH):

• After hybridization, perform sequential washes with progressively increasing stringency by adjusting temperature and ionic strength. High stringency preferentially removes probe–target duplexes with mismatches.
• Practical steps (general):
  • Pre‑warm wash solution to the desired temperature (often matching or slightly below hybridization temperature; specific temperatures vary by probe Tm and salt).
  • Use generous volumes with gentle rocking or rotation for 5–20 min per wash, repeating 2–3×.
  • For membranes, ensure compatibility with nylon/nitrocellulose; for slides, avoid drying between washes.

Immunoassays (ELISA/Western/IHC/IF):

• Incorporate 3–5 washes after primary and secondary incubations. Adjust detergent presence and salt to control hydrophobic and electrostatic background.
• For Westerns, ensure PVDF is pre‑wetted in alcohol then equilibrated in buffer before washes.

Troubleshooting (general):

• High background: increase wash time, temperature (if nucleic acids), or agitation; consider an additional high‑stringency step.
• Weak signal: reduce stringency (higher salt, lower temperature, less detergent) or shorten wash durations.

Documentation: Specific pH, salt, and detergent content for SKU H743162 are Not specified for this item; refer to CoA/Spec Sheet to calibrate your protocol.

Green Alternatives

This product is an aqueous formulation and is generally aligned with green chemistry principles compared to solvent‑intensive workflows. Considerations and alternatives (general, literature):

Advantages (greener aspects):

• Water-based; avoids VOC emissions associated with organic washing solvents.
• Operates at ambient to moderately elevated temperatures, limiting energy use relative to high‑temperature/denaturant protocols.

Potential improvements and alternatives:

• If your legacy protocol uses formamide or high concentrations of chaotropes for stringency, evaluate modern aqueous high‑stringency washes to reduce toxicity and waste. Tradeoff: may require optimized probe/primer design and temperature control.
• For immunoassays, optimize detergent type/concentration to the minimum effective level; some newer surfactants offer improved biodegradability vs traditional alkylphenol ethoxylates.
• Implement closed-loop wash stations and minimal effective wash volumes to reduce water consumption and effluent.

Comparison snapshot (literature/generic):

• High‑stringency aqueous wash vs formamide‑containing wash: lower toxicity and easier waste handling, with comparable specificity when temperature and ionic strength are tuned; however, extremely GC‑rich targets may still benefit from controlled amounts of formamide.

Waste considerations:

• Aqueous buffer waste typically falls under nonhazardous lab waste, but local rules vary—especially if biological materials or stains/substrates are present after use.

Pharmaceutical Uses

This product is intended for research use only and is not formulated as a pharmaceutical excipient or for clinical diagnostic use.

Relevant contexts (nonclinical, literature/general):

• May be used in QC or research assays within bioprocess laboratories (e.g., Western blot, ELISA, nucleic acid hybridization) to evaluate product purity, identity, or process intermediates.
• Useful in in situ hybridization and immunostaining protocols for research tissues or cell lines during method development.

Regulatory note:

• No compendial (USP/EP/JP) status is implied. If use in regulated environments is contemplated, obtain the CoA/Spec Sheet and SDS to assess suitability and document traceability.

Formulation role:

• Not used as a drug product component; rather, it is a process/assay reagent to optimize specificity during wash steps.

Physical Properties

As a formulated aqueous solution, exact physicochemical specifications are not disclosed for this catalog item.

• Appearance: Not specified for this item; refer to CoA/Spec Sheet.
• pH: Not specified for this item; refer to CoA/Spec Sheet. (Literature: high-stringency washes often use near‑neutral pH.)
• Conductivity/Ionic strength: Not specified for this item; refer to CoA/Spec Sheet. (Literature: reduced salt vs. hybridization buffer to increase stringency.)
• Density: Approximately that of water (literature, ~1.0 g/mL at RT) for dilute aqueous buffers.
• Boiling/Melting point: Governed by water (literature: BP ~100 °C at 1 atm; MP ~0 °C), slightly shifted by dissolved salts.
• Solubility: Water-miscible by definition.
• Vapor pressure: Dominated by water (literature).
• Refractive index: Near water (literature, ~1.333 at 20 °C), composition-dependent.
• Storage conditions (Product Data): Store at 2–8 °C; Shipped on wet ice.

Notes for users (general literature guidance):

• High stringency is a function of temperature, ionic strength, and detergent content; increasing temperature and lowering salt typically increase wash stringency.
• If supplied as a concentrate, physical properties (e.g., conductivity) will change upon dilution with nuclease‑free water. Concentration status is not specified for this item; consult label/CoA.

Quality and Grades

• Grade/purity: Not specified for this item; refer to CoA/Spec Sheet.

What “high stringency wash solution” implies (general quality considerations for this product class):

• Consistent ionic strength and pH to achieve reproducible stringency across blots, membranes, and in situ hybridizations.
• Often prepared with nuclease-free water and low–particulate manufacturing to support nucleic acid applications.
• If detergent is included, it is typically of molecular biology grade to minimize background and residue.

Typical quality controls for similar products (literature/general):

• pH at 20–25 °C, conductivity, and visual clarity.
• Bioburden/endotoxin and DNase/RNase activity checks for nucleic acid workflows.
• Lot-to-lot performance verified by wash efficacy against defined hybridization controls or immunoassay panels.

How to use the documentation:

• For this specific SKU (H743162), item‑specific attributes (e.g., pH setpoint, presence/absence of detergent, nuclease‑free status, concentration format) are Not specified for this item; refer to CoA/Spec Sheet.
• Align your protocol with the documented specifications to ensure the intended stringency window is met.

Reaction and Applications

While not a reagent for chemical synthesis, High Stringency Wash Solution is critical in biomolecular interaction workflows where the “reaction” is binding/hybridization.

Key application domains (general, literature):

• Nucleic acid hybridization (Southern, Northern, dot/slot blots, ISH): post‑hybridization washes at defined temperature and salt to selectively retain perfectly matched duplexes while removing mismatches.
• Immunoassays (ELISA, Western blot, IF/IHC): washes after primary/secondary incubation to reduce nonspecific adsorption and Fc‑mediated or hydrophobic interactions.

Mechanistic notes (general):

• Stringency increases by raising temperature, lowering ionic strength, and including nonionic detergent to disrupt hydrophobic and adventitious interactions.
• For nucleic acids, high stringency correlates with lower Tm margin for mismatches, enhancing specificity for fully complementary targets.

Practical tips (general):

• Pre‑equilibrate wash solution to the target temperature before use; insufficient pre‑warming can reduce performance.
• Use ample volumes (e.g., 10–20 mL per cm² membrane per wash, literature guidance) with gentle agitation to improve mass transfer.
• Apply stepwise stringency (e.g., two washes at moderate stringency, one at higher) to balance sensitivity and background.
• For immunoassays, match detergent level to the assay: too much can strip weakly bound specific signal; too little may leave background.

Reaction Conditions

This section provides general literature guidance for using high‑stringency washes in biomolecular assays; it is not specific to SKU H743162.

Nucleic acid hybridization (general):

• Temperature: Typically set relative to probe Tm; high stringency often entails washes at elevated temperatures. Exact temperatures depend on probe length, GC content, and salt.
• Ionic strength: Lower than the hybridization buffer to destabilize mismatches; multiple washes (2–3) of 5–20 min each with agitation are common.
• Detergent: A nonionic surfactant is often included to reduce hydrophobic sticking.

Immunoassays (general):

• Wash cycles: Commonly 3–5 washes after each binding step, 3–10 min each with gentle rocking or automated plate washers.
• Buffer matrix: TBS or PBS backbones are typical, modified for higher stringency as needed.

Operational tips:

• Pre‑warm or maintain at set temperature using a hybridization oven or water bath for nucleic acid applications.
• Ensure complete coverage of membranes/slides; insufficient volume leads to edge effects and higher background.
• Validate on a small scale to avoid over‑stripping low‑affinity but specific signals.

For SKU H743162, item‑specific parameters (pH, salt, detergent, concentrate vs ready‑to‑use) are Not specified for this item; refer to CoA/Spec Sheet.

Safety and Handling

• GHS classification, signal word, hazard statements, pictograms: Not specified for this item; refer to the product SDS for authoritative safety information.
• Likely hazards (general for wash buffers, literature): mild eye/skin irritation; detergents (if present) can defat skin and increase irritation. Avoid ingestion and inhalation of mists.

Recommended PPE and practices (general):

• Wear lab coat, safety glasses, and disposable nitrile gloves.
• Work in a clean area; avoid aerosol generation. Close containers promptly to prevent contamination/evaporation.
• Hygiene: wash hands after handling; do not eat/drink in lab areas.

First-aid overview (general):

• Skin/eye contact: rinse with water for several minutes; remove contact lenses if present and easy to do. Seek medical advice if irritation persists.
• Ingestion/inhalation: rinse mouth; move to fresh air; seek medical advice if unwell.

Incompatibilities and stability (general):

• Avoid mixing with strong oxidizers or reactive chemicals that could degrade buffer components or detergents.
• Do not autoclave unless manufacturer specifies compatibility; heat may degrade certain surfactants or chelators.

Waste and spill response (general):

• Small spills: absorb with inert material; rinse area with water. Dispose in accordance with institutional and local regulations.

Always defer to the SDS and institutional safety protocols for definitive guidance.

Solvent Selection

This product is an aqueous buffer; conventional solvent selection does not apply. Nevertheless, its behavior relative to common wash media is relevant.

• Polarity and miscibility: Fully water-based, miscible with water and typical buffer systems. Not intended to mix with organic solvents.
• Matrix compatibility (general): Suitable for nylon, nitrocellulose, and PVDF membranes in blots; also for glass slides and tissue sections in ISH/IHC, provided the detergent and salt content are compatible. Always check membrane manufacturer guidance.
• When to choose a high-stringency wash (general):
  • To remove weakly bound probes/antibodies and reduce background.
  • During post-hybridization steps (Southern/Northern/ISH) or post-binding washes in ELISA, Western blot, and immunostaining.
• Alternatives (literature):
  • Lower‑stringency washes (higher salt, lower temperature, no detergent) for preserving marginal interactions.
  • Detergent-free PBS/TBS when hydrophobic background is minimal.

Comparison (general, literature):

• High‑stringency wash vs TBS‑T/PBS‑T: increased destabilization of nonspecific interactions via adjusted ionic strength and temperature; may more effectively reduce background at the cost of potentially lowering signal from low‑affinity binders.

Storage and Reconstitution

• Storage conditions (Product Data): Store at 2–8 °C. Keep tightly capped to prevent contamination and evaporation. Avoid prolonged exposure to light/heat.
• Shipping: Shipped on wet ice (Product Data) to maintain 2–8 °C during transit.
• Format: Concentration and readiness (ready‑to‑use vs concentrate) are Not specified for this item; refer to CoA/Spec Sheet.

If supplied ready‑to‑use (general guidance):

• Use directly. Allow to equilibrate to the intended operating temperature before use (e.g., pre‑warm for hybridization washes).
• Do not freeze unless manufacturer indicates compatibility; some detergents can precipitate or phase‑separate upon freezing.

If supplied as a concentrate (general guidance):

• Bring to room temperature and inspect for any salt or detergent precipitates; redissolve by gentle warming and inversion.
• Dilute with nuclease‑free, DI water to the specified working strength; mix thoroughly by inversion (avoid foaming if detergent is present).

General stability and handling:

• Avoid microbial contamination; consider dispensing into aliquots for frequent use.
• Record first‑open date and observe any manufacturer shelf‑life statements on the label/CoA (not specified here).

Structure and Identity

High Stringency Wash Solution is a formulated, aqueous laboratory reagent designed to promote stringent washing in nucleic acid hybridization and immunoassay workflows. It is a mixture rather than a single, discrete compound.

• Item type: Multi‑component aqueous buffer/detergent wash (exact composition not disclosed)
• Molecular formula: Not applicable to mixtures; Not specified for this item; refer to CoA/Spec Sheet.
• Molecular weight: Not applicable to mixtures; Not specified for this item; refer to CoA/Spec Sheet.
• CAS, InChIKey, SMILES: Not applicable to proprietary mixtures; Not specified for this item; refer to CoA/Spec Sheet.
• Structural features (general):
  • Aqueous saline/buffer matrix (literature: commonly phosphate-, Tris-, SSC-, or SSPE-based) with optional nonionic detergent to reduce nonspecific binding.
  • Ionic strength tuned for high stringency; effective at elevated temperatures to destabilize weak interactions. (Literature/typical, composition not specified for this item.)
• 2D description in words (general): an aqueous solution containing buffering species, inorganic salts, and possibly surfactant molecules dispersed at low wt% to modulate hydrophobic interactions. No defined stereochemistry applies.

Synthetic Utility

High Stringency Wash Solution is not a chemical synthesis reagent and has no direct role in small‑molecule or polymer synthesis.

• It does not serve as a nucleophile, electrophile, catalyst, or solvent for standard organic reactions.
• Its value is in analytical and bioanalytical workflows, improving specificity in detection/quantification.

If chemical compatibility is a concern (e.g., washing immobilized ligands on solid supports):

• Verify that the buffer and any detergent present are compatible with the solid phase (e.g., resins, membranes) and won’t leach or denature immobilized biomolecules under your conditions.

For synthetic chemists running bioconjugations or affinity purifications, analogous high‑stringency washes (adjusted salt/detergent) can be used to remove weakly bound off‑targets during solid‑phase or affinity workflows, but this item’s exact composition is Not specified for this item; refer to CoA/Spec Sheet.

Target Specificity

Not applicable. This product is not an antibody, probe, or ligand with defined target specificity. It is a wash solution used to modulate binding/hybridization conditions across diverse targets.

Preguntas frecuentes

How should this product be stored?

Store at 2–8 °C. Refrigerated storage is required to maintain the specified shelf life.

How is this product shipped?

This product ships chilled on wet ice. Unpack on arrival and transfer it to the storage condition stated above.

What documentation is provided?

Available product documentation, including Certificates of Analysis (COA), Safety Data Sheets (SDS), and specification sheets, is shown in the product document area. Document availability and access follow the current site policy.