PRODUCTS SOLD ON PEPTIDESLABIRELAND.COM ARE FOR RESEARCH PURPOSES ONLY AND ARE NOT FOR HUMAN OR VETERINARY USE.
Fast Ireland delivery — dispatched to Dublin, Cork, Galway, Limerick and nationwide.
PRODUCTS SOLD ON PEPTIDESLABIRELAND.COM ARE FOR RESEARCH PURPOSES ONLY AND ARE NOT FOR HUMAN OR VETERINARY USE.
Fast Ireland delivery — dispatched to Dublin, Cork, Galway, Limerick and nationwide.
Price range: €9.50 through €14.50
Acetic Acid Water for Research — mildly acidic aqueous solvent for peptides poorly soluble in neutral buffers. Compound-specific reconstitution guidance on each product’s COA. Fast Ireland delivery.
For laboratory research use only. Not for human or veterinary use.
Acetic Acid Water (0.1% Acetic Acid in Water for Injection) is the standard reconstitution solvent for peptides and proteins that are poorly soluble or unstable in plain sterile water . An essential laboratory consumable for any research programme working with lyophilised peptides , available to buy in Ireland with fast dispatch included.
Acetic Acid Water is a precisely prepared, sterile solution of 0.1% glacial acetic acid in Water for Injection (WFI) . The universally recommended reconstitution vehicle for lots of research peptides including growth hormone fragments, IGF-1, and many other lyophilised research compounds that require a mildly acidic aqueous environment for complete solubilisation and stability, Researchers and institutions across Ireland can source research-grade Acetic Acid Water directly from our Irish supply, with domestic-speed dispatch.
✅ Sterile , Manufactured to Research-Grade Standards
✅ Precisely Prepared 0.1% Acetic Acid Concentration
✅ Water for Injection (WFI) Base
✅ Fast Dispatch to Ireland | Research Solvents Ireland Stock
Acetic Acid Water . Also referred to as 0.1% acetic acid solution or acidified water for injection is a sterile aqueous solution containing 0.1% glacial acetic acid (CH₃COOH) in Water for Injection. This concentration produces a mildly acidic pH of approximately 3.5–4.0 . A range that improves the solubility and stability of many peptides and proteins that are difficult or impossible to fully dissolve in neutral pH sterile water or bacteriostatic water.
The need for an acidic reconstitution solvent arises from the physicochemical properties of certain peptide classes. Many peptides — especially those with a high proportion of hydrophobic amino acids, those with aggregation-prone sequences, or those that exist as lyophilised acetate salts . Carry a net positive charge at low pH that increases their aqueous solubility through electrostatic repulsion between molecules, preventing the aggregation and incomplete dissolution that can occur at neutral pH. The 0.1% acetic acid concentration is the research community standard . Low enough to be compatible with subsequent dilution into physiological buffers for working solutions, while acidic enough to provide the solubilisation benefit required for difficult peptides.
Acetic Acid Water is an essential consumable in any peptide research laboratory . Not an optional alternative to sterile water, but the specifically required reconstitution vehicle for a defined class of research peptides where using plain sterile water risks incomplete dissolution, aggregation, loss of biological activity, and irreproducible research results.
Standard Peptide Reconstitution , Acetic Acid Water is the recommended or required reconstitution solvent for a wide range of lyophilised research peptides , those that don’t dissolve completely or reliably in sterile water or bacteriostatic water at neutral pH. Using the correct reconstitution solvent is fundamental to research quality and incomplete dissolution or peptide aggregation directly compromises biological activity measurements, dose accuracy, and experimental reproducibility.
Growth Hormone Fragment Reconstitution . Growth hormone-derived research peptides , including AOD-9604, HGH Fragment 176-191, and related GH fragment analogues and are among the most commonly cited peptides requiring acetic acid water for reliable reconstitution. The acidic environment provided by 0.1% acetic acid ensures complete solubilisation of these hydrophobic fragment sequences, preserving their biological activity for downstream research use.
IGF-1 and Insulin-Like Growth Factor Research . IGF-1 and related insulin-like growth factor peptides are standard candidates for acetic acid water reconstitution and with the mildly acidic environment critical for maintaining IGF-1 in its soluble monomeric form and preventing the aggregation that compromises receptor binding assays and in vitro biological activity measurements.
Peptide Stability Research . Acetic Acid Water is used in peptide stability studies examining how different reconstitution conditions affect peptide integrity over time . Comparing degradation rates, aggregation behaviour, and biological activity retention in acidic versus neutral reconstitution vehicles, contributing to the understanding of optimal peptide handling and storage protocols.
Working Solution Preparation , Acetic Acid Water stock solutions are routinely diluted into physiological buffers such as PBS or cell culture media to prepare working concentrations for research use and the low acetic acid concentration at 0.1% is compatible with this dilution approach, with the resulting pH shift to more physiological values occurring upon mixing with buffered solutions.
Lyophilised Protein Reconstitution , Beyond peptides, Acetic Acid Water is used for the reconstitution of certain lyophilised proteins and recombinant protein research reagents that specify acidic reconstitution conditions — making it a broadly applicable reconstitution solvent for protein biochemistry research beyond peptide-specific applications.
Peptides that typically require or benefit from Acetic Acid Water reconstitution include those with the following characteristics and always follow the specific reconstitution protocol provided with each compound:
Commonly reconstituted in Acetic Acid Water:
Peptides that typically reconstitute in sterile or bacteriostatic water (and don’t require acetic acid water) include most water-soluble research peptides such as BPC-157, TB-500, Epithalon, KPV, MOTS-c, Selank, Semax, and others . Always refer to the individual compound reconstitution protocol.
| Solvent | pH | Best Used For | Key Consideration |
|---|---|---|---|
| Acetic Acid Water (0.1%) | ~3.5–4.0 | Hydrophobic / aggregation-prone peptides , GH fragments, IGF-1 | Required for specific peptide classes and not a universal substitute for sterile water |
| Sterile Water for Injection | ~5.5–7.0 | Most hydrophilic research peptides | Most common reconstitution solvent . Not suitable for all peptides |
| Bacteriostatic Water (0.9% benzyl alcohol) | ~5.5–7.0 | Peptides requiring multi-use vial stability | Benzyl alcohol preservative extends post-reconstitution stability |
| PBS (Phosphate Buffered Saline) | 7.4 | Working solution dilution / physiological assays | Physiological pH and often used as diluent after initial acid/water reconstitution |
| DMSO | . | Poorly water-soluble small molecules | Not suitable for most peptides used for small molecule research compounds |
| Parameter | Detail |
|---|---|
| Name | Acetic Acid Water |
| Composition | 0.1% Glacial Acetic Acid in Water for Injection |
| Concentration | 0.1% v/v Acetic Acid (CH₃COOH) |
| pH | Approximately 3.5–4.0 |
| Base Solvent | Water for Injection (WFI) |
| Grade | Research-Grade Sterile Solution |
| Primary Use | Reconstitution solvent for lyophilised research peptides and proteins |
| Form | Sterile liquid solution |
| Storage | Room temperature or 2–8°C, protect from contamination |
✅ Precisely prepared 0.1% concentration . Research community standard
✅ Sterile Water for Injection base , no contaminants or preservatives
✅ Essential consumable for GH fragment and IGF-1 peptide research
✅ Fast dispatch to Ireland
✅ Compatible with downstream dilution into PBS or physiological buffers
Can I buy Acetic Acid Water in Ireland? Yes , we supply research-grade Acetic Acid Water to researchers and institutions across Ireland with fast dispatch. This solvent is supplied as a research laboratory consumable for use in peptide and protein reconstitution within licensed laboratory environments.
What is Acetic Acid Water and why is it needed for some peptides? Acetic Acid Water is a sterile solution of 0.1% glacial acetic acid in Water for Injection and producing a mildly acidic pH of approximately 3.5–4.0. It is required for reconstituting peptides that are poorly soluble or prone to aggregation at the neutral pH of plain sterile water . Particularly hydrophobic peptides such as growth hormone fragments and IGF-1. Using plain sterile water for these peptides risks incomplete dissolution, aggregation, loss of biological activity, and inaccurate dosing in research applications.
Can I just make Acetic Acid Water myself in the laboratory? While 0.1% acetic acid in water can be prepared in a laboratory setting, purchasing pre-prepared sterile research-grade Acetic Acid Water ensures consistent concentration, confirmed sterility, and the absence of contaminants , eliminating a potential source of experimental variability that home preparation introduces. For research applications where reconstitution conditions directly affect peptide activity and assay reproducibility, using a verified sterile preparation is the recommended approach.
Is Acetic Acid Water the same as bacteriostatic water? No and they’re different solvents with different compositions and purposes. Bacteriostatic water contains 0.9% benzyl alcohol as a preservative, which extends the usable life of reconstituted peptides in multi-use vials and has a near-neutral pH. Acetic Acid Water contains 0.1% acetic acid and no preservative , its purpose is to provide the mildly acidic pH needed for solubilising peptides that aggregate at neutral pH, not to extend storage life. Some protocols use acetic acid water for initial dissolution followed by dilution into bacteriostatic water or PBS for working solutions.
Which peptides in your range require Acetic Acid Water for reconstitution? The most common peptides in research programmes that require acetic acid water reconstitution are growth hormone fragments , including AOD-9604 and HGH Fragment 176-191 and and IGF-1 and related insulin-like growth factor peptides. Always refer to the individual reconstitution protocol provided with each compound in your order, as this will specify the recommended solvent. Most other peptides in our Ireland range , including BPC-157, TB-500, Epithalon, KPV, VIP, and MOTS-c . Reconstitute in sterile or bacteriostatic water.
How do I use Acetic Acid Water to reconstitute a lyophilised peptide? Allow the peptide vial to reach room temperature before opening. Add the appropriate volume of Acetic Acid Water slowly down the inside wall of the vial , don’t inject directly onto the lyophilised powder and don’t shake. Swirl gently until the powder is fully dissolved. Once dissolved in acetic acid water stock solution, dilute to working concentration in PBS or the appropriate physiological buffer for your assay. Use promptly or aliquot and store at -20°C or -80°C as specified in the compound reconstitution protocol.
Is 0.1% acetic acid safe to use in cell-based assays? At 0.1% concentration in the stock reconstitution solution, acetic acid isn’t directly added to cell culture at this concentration the stock solution is always diluted substantially into cell culture media or physiological buffer before use, reducing the acetic acid to negligible concentrations well below any cytotoxic threshold. Always calculate the final acetic acid concentration in your working solution and verify it’s below 0.01% for cell-based applications . If in doubt, include an acetic acid vehicle control in your experimental design.
Acetic Acid Water is supplied as a research-grade laboratory reconstitution solvent for use within licensed laboratory environments. This product isn’t intended for human consumption, injection, or any therapeutic application. It must be handled by qualified researchers in compliance with applicable Irish and EU laboratory safety regulations and institutional guidelines. By purchasing, you confirm that this solvent will be used solely within approved laboratory research settings.
Acetic Acid Water isn’t authorised as a medicine by the HPRA. It’s legal to buy, hold and use as a research chemical for in-vitro laboratory work, and that’s the only use we supply it for. If you want the full regulatory picture, see our Irish researcher’s guide to peptide legality.
Every vial ships with an HPLC purity trace (typically ≥99%), mass-spec identity confirmation, and endotoxin/heavy-metal screening on the batch. The full per-batch Certificate of Analysis is available on request from research@peptideslabuk.com. Our quality system is ISO 9001 certified and third-party testing runs through a UKAS-accredited lab.
Standard protocol: let the Acetic Acid Water vial and your bacteriostatic water come to room temperature, wipe both stoppers with a 70% isopropyl swab, then inject the water slowly down the side wall of the peptide vial. Don’t stream directly onto the powder cake. Swirl gently, don’t shake, and give it five to ten minutes to fully dissolve. Label the vial with compound, concentration and reconstitution date, store at 2–8°C between assays.
Same-day dispatch on orders placed before 2pm on a working day. Delivery is 24–48 hours to any Irish county via An Post Express or DPD. Cold chain is preserved with insulated wrap plus gel pack. No customs step, no border delays and because it never leaves Ireland.
In the Irish research space Acetic Acid Water tends to appear in reconstitution and laboratory handling of research peptides. It’s often paired with any lyophilised peptide vial when researchers are studying combined mechanisms rather than the compound alone.
Lyophilised Acetic Acid Water is shelf-stable at room temperature until first use. Once reconstituted, keep it refrigerated at 2–8°C and use within the working shelf life described on the CoA. Freeze/thaw cycles degrade peptides, so aliquot the reconstituted solution if you plan to run assays over several weeks.
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