Orion 910725 perpHect pH 7 Buffer Solution 55350-12 Box of 25 Packets NOS

Orion 910725 perpHect pH 7 Buffer Solution 55350-12 Box of 25 Packets NOS

This is a factory-sealed box of 25 individual perpHect pH 7 buffer solution packets from Orion (Thermo Scientific Orion), sold under Orion Catalog No. 910725 and Cole-Parmer part number 55350-12. Each packet is a pre-measured, single-use pH 7 calibration buffer certified to pH 7.00 ± 0.01 at 25°C and traceable to NIST Standard Reference Material. The box is new and unused, sourced as New Old Stock from warehouse storage.

Specifications & What's Included

• Brand: Orion (Thermo Scientific Orion)
• Catalog No.: 910725
• Distributor Part No.: Cole-Parmer 55350-12
• Buffer pH value: 7.00
• Accuracy: pH 7.00 ± 0.01 @ 25°C
• pH vs. Temperature (7.00 Buffer): 7.11 @ 0°C, 7.06 @ 10°C, 7.01 @ 20°C, 6.98 @ 30°C, 6.97 @ 40°C, 6.99 @ 50°C, 7.03 @ 60°C, 7.08 @ 70°C
• Quantity: Box of 25 individual buffer packets
• Certification: ORION Certified; traceable to NIST Standard Reference Material
• Storage: Room temperature; see bottom of box for lot code, certification date, and reorder numbers
• Key ingredients (from label): High Purity Deionized Water (H₂O), Potassium Hydrogen Phthalate (KHP), Amaranth Red Dye, Sodium Phosphate Dibasic (Na₂HPO₄), Potassium Phosphate Monobasic (KH₂PO₄), Sodium Chromate (Na₂CrO₄), Sodium Dichromate (K₂Cr₂O₇), Sodium Carbonate (Na₂CO₃), Sodium Bicarbonate (NaHCO₃), Methylparaben, FD&C Blue #1
• Caution: Do not ingest. Flush affected area with water if contact occurs.
• Material Safety Data Sheet available upon request from Orion

Applications

pH buffer solutions at pH 7 are a standard calibration reference used with laboratory-grade and field pH meters. Orion's perpHect buffer packets are designed for single-use convenience — each packet contains a pre-measured volume of buffer that eliminates the risk of contamination from reusing bulk buffer bottles. The perpHect line is widely used in chemistry, environmental science, biology, water quality testing, food and beverage QC, pharmaceutical QC, and general laboratory work wherever a pH meter requires a neutral-point calibration check. NIST traceability means the buffer value is tied to a certified reference standard, which is required in many regulated laboratory environments. The Cole-Parmer 55350-12 cross-reference makes this box compatible with orders placed through Cole-Parmer supply chains. pH 7 buffer is also used alongside pH 4 and pH 10 buffers for two- or three-point meter calibrations.