--- product_id: 82405309 title: "pH Buffer Calibration Solution, pH 4.00 — 1 Gallon — NIST Traceable Reference Standards for All pH Meters — Color Coded Red" brand: "biopharm" price: "₱12570" currency: PHP in_stock: true reviews_count: 2 category: "Biopharm" url: https://www.desertcart.ph/products/82405309-ph-buffer-calibration-solution-ph-4-00-1-gallon-nist store_origin: PH region: Philippines --- # NIST-traceable precision Color-coded for instant ID Lot & expiration tracked pH Buffer Calibration Solution, pH 4.00 — 1 Gallon — NIST Traceable Reference Standards for All pH Meters — Color Coded Red **Brand:** biopharm **Price:** ₱12570 **Availability:** ✅ In Stock ## Summary > 🧪 Calibrate with Confidence — Precision that Powers Progress ## Quick Answers - **What is this?** pH Buffer Calibration Solution, pH 4.00 — 1 Gallon — NIST Traceable Reference Standards for All pH Meters — Color Coded Red by biopharm - **How much does it cost?** ₱12570 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/82405309-ph-buffer-calibration-solution-ph-4-00-1-gallon-nist) ## Best For - biopharm enthusiasts ## Why This Product - Trusted biopharm brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Versatile Lab Essential:** Perfect for pharmaceutical, academic, research, and industrial pH meters. - • **Bulk Supply, Zero Downtime:** Generous 1-gallon size keeps your lab running without interruption. - • **Traceability You Can Trust:** Unique lot numbers and expiration dates for full quality control. - • **Instant Visual Identification:** Bold red color coding eliminates guesswork during busy workflows. - • **Certified Accuracy, Guaranteed:** NIST SRM calibration ensures lab-grade precision every time. ## Overview This 1-gallon pH 4.00 buffer calibration solution is NIST-traceable and color-coded red for quick identification. Manufactured under strict lab protocols, each batch includes a unique lot number and expiration date, ensuring reliable accuracy and traceability. Ideal for pharmaceutical, academic, research, and industrial labs, it guarantees over one year of shelf life upon receipt. ## Description This buffer calibration solution is suitable for the calibration of all pH meters. Each production lot is manufactured in our own laboratory following carefully controlled, written procedures and standardized against NIST standard reference materials (SRM) for high accuracy. The finished product is assigned a unique Lot number and expiration date. These products will have greater than one year shelf life when received. Certificate of analysis and traceability included. Review: Out of buffer. - I was out of 4.00 pH buffer. Pretty generic stuff. Regular supply was out of it. On time Delivery was important. It came when they said it would. Happy Review: Not cherry juice! - 4 buffer! A big jug of it! It's red and everything! ## Features - NIST Reference Calibrated - Color-Coded for Easy Reference - Lot Numbered and Expiration Dated - Individual Bagged 1 Gallon Bottle - For Pharmaceutical, Academic, Research and Industrial Labs ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07G9QYZYK | | Best Sellers Rank | #117,136 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #46 in Chemical Buffers | | Date First Available | July 31, 2017 | | Is Discontinued By Manufacturer | No | | Item Weight | 2.43 pounds | | Manufacturer | Biopharm Inc | | Product Dimensions | 8 x 8 x 14 inches | ## Images ![pH Buffer Calibration Solution, pH 4.00 — 1 Gallon — NIST Traceable Reference Standards for All pH Meters — Color Coded Red - Image 1](https://m.media-amazon.com/images/I/71Okfvbxl6L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Out of buffer. *by E***6 on March 6, 2023* I was out of 4.00 pH buffer. Pretty generic stuff. Regular supply was out of it. On time Delivery was important. It came when they said it would. Happy ### ⭐⭐⭐⭐⭐ Not cherry juice! *by G***L on March 26, 2019* 4 buffer! A big jug of it! It's red and everything! ## Frequently Bought Together - pH Buffer Calibration Solution, pH 4.00 — 1 Gallon — NIST Traceable Reference Standards for All pH Meters — Color Coded Red - pH Buffer Calibration Solution, pH 10.00 — 1 Gallon — NIST Traceable Reference Standards for All pH Meters — Color Coded Blue - pH Buffer Calibration Solution, pH 7.00 — 1 Gallon — NIST Traceable Reference Standards for All pH Meters — Color Coded Yellow --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ph/products/82405309-ph-buffer-calibration-solution-ph-4-00-1-gallon-nist](https://www.desertcart.ph/products/82405309-ph-buffer-calibration-solution-ph-4-00-1-gallon-nist) --- *Product available on Desertcart Philippines* *Store origin: PH* *Last updated: 2026-05-16*