# Potassium Electrolyte Reagent Kit 2 × 25 ml – Turbidity / Tetraphenyl Boron Method # Swemed Potassium Electrolyte Reagent Kit 2 × 25 ml The **Swemed Potassium Electrolyte Reagent Kit 2 × 25 ml** is a professional clinical biochemistry reagent intended for the **quantitative colorimetric determination of potassium in serum and plasma**. Swemed describes the assay as a **Turbidity Method** using **sodium tetraphenylboron**. Potassium reacts with sodium tetraphenylboron to produce a colloidal suspension, and the degree of turbidity formed is proportional to the potassium concentration in the sample. Swemed’s current catalogue lists Potassium in a **2 × 25 ml pack**, product code **POT 727**, using the **Tetraphenyl Boron Method**. The reagent is suitable for professional pathology laboratories, diagnostic centres, hospitals and clinical chemistry laboratories, including compatible **open-system fully automatic and semi-automatic analysers** after application programming and method validation. * * * ## Product at a Glance Product Detail Information Product Name Potassium Electrolyte Reagent Kit Brand Swemed Diagnostics Pack Size **2 × 25 ml** Product Code **POT 727** Test Parameter Potassium Method **Tetraphenyl Boron / Turbidity Method** Assay Mode Endpoint Wavelength **630 nm** Temperature **37°C** Unit **mEq/L** Standard Concentration **4 mEq/L** Reaction Direction Increasing Reagent Volume **1000 µl** Sample Volume **20 µl** Incubation **10 minutes at room temperature** Measuring Range **1–8 mEq/L** Linearity **Up to 8.0 mEq/L** Specimen Serum / Heparin Plasma Reagent Preparation Ready to Use Reagent Storage **18–30°C** Freezing Do Not Freeze Analyser Compatibility Open-System Fully Automatic & Semi-Automatic Biochemistry Analysers Intended Use Professional In Vitro Diagnostic Use Seller Microsidd India Website microsidd.com Location Bangalore / Bengaluru, Karnataka, India The assay settings above are taken from the current Swemed Potassium technical insert. # Key Features - **Swemed Diagnostics Potassium Reagent Kit** - Pack size: **2 × 25 ml** - Product code: **POT 727** - **Tetraphenyl Boron / Turbidity Method** - Ready-to-use reagent - Ready-to-use potassium standard - Measurement at **630 nm** - Standard concentration: **4 mEq/L** - Sample volume: **20 µl** - Reagent volume: **1000 µl** - Incubation: **10 minutes at room temperature** - Measuring range: **1–8 mEq/L** - Linearity up to **8.0 mEq/L** - Suitable for serum and heparin plasma - Suitable for compatible open-system semi-auto analysers - Suitable for compatible open-system fully automatic analysers - For **professional in vitro diagnostic use only** # Why Potassium Testing Is Important Potassium is the principal cation of intracellular fluid and plays an important role in: - Muscle activity - Cardiac electrical activity - Acid-base balance - Osmotic balance - Water retention - Renal and adrenal physiology Swemed notes that elevated potassium levels may be associated with conditions such as renal failure, dehydration, shock or adrenal insufficiency, while decreased potassium levels may occur with malnutrition, gastrointestinal fluid loss and increased adrenal cortical activity. Potassium is commonly tested alongside: - Sodium - Chloride - Urea - Creatinine - Calcium - Magnesium - Other renal and electrolyte parameters # Test Principle The Swemed Potassium assay uses **sodium tetraphenylboron** in a specially prepared reagent mixture. Potassium in the specimen reacts to form a **colloidal suspension**. The turbidity produced is proportional to the potassium concentration within the assay measuring range of approximately **1–8 mEq/L**. # Reagent Preparation Swemed states that: **The potassium reagent and potassium standard are ready to use.** This helps simplify routine laboratory workflow by avoiding additional reagent reconstitution. # Technical Specifications Parameter Swemed Specification Test Potassium Method Tetraphenyl Boron / Turbidity Mode Endpoint Wavelength **630 nm** Unit **mEq/L** Temperature **37°C** Standard Concentration **4 mEq/L** Reaction Slope Increasing Reagent Volume **1000 µl** Sample Volume **20 µl** Incubation **10 minutes at room temperature** Blanking Reagent Blank Measuring Range **1–8 mEq/L** Linearity **8.0 mEq/L** # Assay Procedure Summary Tube Reagent Standard / Sample Blank 1000 µl — Standard 1000 µl 20 µl Standard Test 1000 µl 20 µl Sample Mix and incubate for: **10 minutes at room temperature** Then read the absorbance of the standard and sample against the reagent blank at: **630 nm**. # Calculation **Potassium (mEq/L) = Absorbance of Sample ÷ Absorbance of Standard × Concentration of Standard** Manufacturer standard concentration: **4 mEq/L**. # Compatible with Open-System Biochemistry Analysers The **Swemed Potassium Reagent Kit** can be used with compatible programmable open-system analysers where the required endpoint parameters can be entered and validated. Open-System Setting Potassium Application Mode Endpoint Wavelength **630 nm** Temperature **37°C** Reagent Volume **1000 µl** Sample Volume **20 µl** Standard **4 mEq/L** Incubation **10 minutes at RT** Reaction Increasing Blank Reagent Blank Unit mEq/L Suitable analyser categories include: - **Open-system semi-automatic biochemistry analysers** - **Open-system fully automatic biochemistry analysers** - Programmable chemistry analysers supporting 630 nm endpoint measurement The laboratory must verify instrument compatibility and validate the reagent application before routine clinical reporting. # Specimen Requirements Swemed lists: - **Serum** - **Heparin plasma** Fresh, clear and **non-haemolysed serum from fasting patients** is recommended. This is especially important for potassium because red blood cells contain a high concentration of intracellular potassium. Haemolysis can release potassium into the specimen and produce **falsely elevated results**. Blood should also be separated from red cells shortly after collection to minimise leakage of intracellular potassium into serum or plasma. # Anticoagulant Guidance Swemed states that plasma collected with an anticoagulant **that does not contain potassium** may be suitable. For best results: - Use heparin plasma where validated - Avoid anticoagulants or collection materials containing potassium - Avoid haemolysed specimens - Separate serum/plasma from cells promptly # Specimen Stability Swemed provides the following serum/plasma stability guidance: Storage Condition Stability 15–25°C **7 days** 2–8°C **Up to 2 weeks** Contaminated specimens should be discarded. # Measuring Range and Linearity The assay measuring range is: **1–8 mEq/L** The stated linearity is: **8.0 mEq/L**. For samples above this measuring range, the manufacturer advises dilution **1:1 with 0.9% NaCl**, repeating the assay, and multiplying the result by **2**. # Interference Information Swemed notes that the following may interfere with the assay: - Turbid specimens - Icteric specimens - Haemolysed serum - Bilirubin above **40 mg/dL** - Urea nitrogen above **80 mg/dL** - High ammonia levels Because haemolysis itself releases intracellular potassium, visibly haemolysed samples should be avoided. # Manufacturer Reference Range Specimen Manufacturer Reference Range Serum / Plasma **3.4–5.3 mEq/L** Swemed recommends that each laboratory verify whether this reference interval is appropriate for its own patient population and analyser system. # Storage and Stability Swemed states that the reagent should be: - Stored at **18–30°C** - Protected from light - Protected from contamination - **Not frozen** - Used within the labelled shelf life The reagent should also be checked for deterioration before use. Swemed lists inappropriate blank absorbance, visible particles and abnormal turbidity as signs that reagent performance should be reviewed. # Safety and Precautions The manufacturer notes that the reagent contains **sodium azide at 0.95 g/L as preservative**. Professional users should: - Wear suitable gloves - Use appropriate eye / face protection - Avoid skin and mucous membrane contact - Never pipette reagent by mouth - Follow Good Laboratory Practice - Dispose of reagents according to institutional procedures # Potassium in an Electrolyte Profile Parameter Laboratory Relevance Potassium Intracellular and cardiac electrolyte balance Sodium Extracellular fluid and osmotic balance Chloride Fluid and acid-base balance Calcium Mineral and neuromuscular function Magnesium Neuromuscular and metabolic function Urea Renal and protein metabolism Creatinine Renal filtration assessment # Sodium vs Potassium Reagent Feature Swemed Sodium Swemed Potassium Pack Size 2 × 25 ml **2 × 25 ml** Method Colorimetric **Tetraphenyl Boron / Turbidity** Wavelength 630 nm **630 nm** Mode Endpoint **Endpoint** Sample Volume 10 µl **20 µl** Standard 150 mEq/L **4 mEq/L** Linearity 200 mEq/L **8 mEq/L** Specimen Serum / Heparin Plasma **Serum / Heparin Plasma** The two products are separate electrolyte assays and should not be interchanged. # Who Can Buy This Product? Buyer Type Typical Application Pathology Laboratories Routine potassium testing Diagnostic Centres Electrolyte and renal-profile testing Hospital Laboratories Clinical chemistry investigations Nephrology Centres Electrolyte monitoring Dialysis Centres Renal and electrolyte testing Cardiac Care Laboratories Potassium monitoring Clinical Chemistry Laboratories Routine potassium estimation Medical Institutions Teaching and diagnostic use Healthcare Organisations Institutional procurement Laboratory Distributors Professional supply where permitted # Useful Tips Before Ordering - Confirm that **Potassium – Tetraphenyl Boron / Turbidity Method** is required. - Verify the pack size: **2 × 25 ml**. - Confirm analyser support for **630 nm endpoint measurement**. - Verify that your analyser is an **open system**. - Confirm the programmed reagent volume: **1000 µl**. - Confirm the sample volume: **20 µl**. - Verify the standard concentration: **4 mEq/L**. - Avoid haemolysed samples. - Separate serum/plasma from red cells promptly. - Store the reagent at **18–30°C**. - Do not freeze. - Perform calibration and internal quality control before patient testing. # Buy Swemed Potassium Reagent in Bangalore Microsidd India supplies **electrolyte reagents, renal-profile reagents and clinical biochemistry products from Bangalore / Bengaluru, Karnataka**. The **Swemed Potassium Electrolyte Reagent Kit 2 × 25 ml** is suitable for pathology laboratories, diagnostic centres, hospitals, nephrology centres, dialysis facilities and professional clinical chemistry laboratories using compatible open-system analysers. The product can be ordered through **microsidd.com**, subject to stock availability and delivery serviceability. # Search Relevance Relevant searches include: - Potassium reagent supplier in Bangalore - Swemed Potassium Reagent Bangalore - Potassium electrolyte reagent Bengaluru - Potassium tetraphenyl boron reagent India - Potassium reagent 2 × 25 ml - Potassium reagent for semi auto analyser - Potassium reagent for fully automatic analyser - Open system potassium reagent Bangalore - Electrolyte reagent supplier Bengaluru - Renal profile reagent supplier Bangalore - Clinical chemistry reagent supplier near me - Swemed Diagnostics potassium reagent India - Laboratory reagents supplier in bangalore # Product Summary ### What is Swemed Potassium Electrolyte Reagent Kit? The **Swemed Potassium Electrolyte Reagent Kit 2 × 25 ml** is a ready-to-use professional clinical chemistry reagent used for quantitative potassium determination by a **Tetraphenyl Boron / Turbidity endpoint method**. ### What method does it use? It uses **sodium tetraphenylboron** to create a turbidity proportional to potassium concentration. ### What wavelength is required? **630 nm**. ### What is the sample volume? **20 µl**. ### What is the reagent volume? **1000 µl**. ### What is the potassium standard concentration? **4 mEq/L**. ### What is the assay linearity? **Up to 8.0 mEq/L**. ### Which specimen types can be used? **Serum and heparin plasma**. ### Why should haemolysed samples be avoided? Red blood cells contain high intracellular potassium, so haemolysis can release potassium into the sample and cause falsely elevated results. ### Is it compatible with semi-automatic analysers? Yes, when used on compatible **open-system semi-automatic biochemistry analysers** after programming and laboratory validation. ### Is it compatible with fully automatic analysers? Yes, when used on compatible **open-system fully automatic analysers** that permit third-party reagent programming and support 630 nm endpoint measurement. # Entity Information Entity Details Product Potassium Electrolyte Reagent Kit Brand Swemed Diagnostics Pack Size 2 × 25 ml Product Code POT 727 Analyte Potassium Method Tetraphenyl Boron / Turbidity Mode Endpoint Wavelength 630 nm Unit mEq/L Specimen Serum / Heparin Plasma Clinical Category Electrolytes / Renal Profile Product Category Laboratory Reagents Subcategory Biochemistry Reagents Analyser Compatibility Open-System Fully Automatic & Semi-Automatic Analysers Seller Microsidd India City Bangalore / Bengaluru State Karnataka Country India Website microsidd.com # Why Buy Swemed Potassium Reagent from Microsidd.com? Electrolyte reagents should be purchased only after verifying the **exact analyte, methodology, wavelength, pack size, sample requirement, analyser compatibility, storage condition and seller source**. Microsidd India specialises in laboratory and diagnostic products and has long-standing experience in the IVD sector, helping professional laboratory buyers verify technical requirements before purchase. ## Microsidd.com vs Online Marketplaces vs Offline Suppliers Buying Factor Microsidd.com Large Online Marketplaces Offline / Local Suppliers Seller Specialisation Diagnostic & laboratory focused Seller expertise varies Dealer dependent Method Verification Tetraphenyl Boron / Turbidity method can be confirmed Listing details may be limited Depends on dealer Pack Verification 2 × 25 ml can be confirmed Pack listing may vary Stock dependent Open-System Guidance Better suited to analyser-specific queries Often limited Dealer dependent Product Support Reagent parameters can be checked before ordering General marketplace support Depends on supplier GST Invoice Available for eligible purchases Seller dependent May vary B2B Procurement Suitable for labs and institutions Seller dependent Usually local Product Range Specialist electrolyte and biochemistry catalogue Broad but not specialised Often limited Customer Support Direct Microsidd support Marketplace + seller layer Local support India-Wide Supply Subject to serviceability Broad Usually regional # Frequently Asked Questions ### What is Swemed Potassium Reagent used for? It is used for quantitative determination of **potassium in serum and plasma** using a tetraphenyl boron turbidity method. ### What is the pack size? **2 × 25 ml**. ### What method is used? **Tetraphenyl Boron / Turbidity Method**. ### What wavelength is required? **630 nm**. ### What is the assay mode? **Endpoint**. ### What is the sample volume? **20 µl**. ### What is the reagent volume? **1000 µl**. ### What is the standard concentration? **4 mEq/L**. ### What is the measuring range? **1–8 mEq/L**. ### What is the linearity? **8.0 mEq/L**. ### Is the reagent ready to use? Yes. Swemed states that the reagent and standard are **ready to use**. ### Why should haemolysed samples be avoided? Haemolysis releases intracellular potassium from red blood cells and may cause falsely high potassium values. ### How should the reagent be stored? Store at **18–30°C**, protect from light and contamination, and **do not freeze**. ### Can it be used on a semi-auto analyser? Yes, on compatible **open-system semi-automatic biochemistry analysers** after programming and method validation. ### Can it be used on a fully automatic analyser? Yes, on compatible **open-system fully automatic analysers** supporting the required endpoint parameters. ### Is this product for home testing? No. It is intended for **professional in vitro diagnostic use only**. # Medical and Laboratory Disclaimer The information on this product page is provided for **general product identification, procurement and laboratory educational purposes only**. This product is intended for **professional in vitro diagnostic use by trained laboratory personnel**. Potassium results should not be interpreted independently to diagnose or exclude renal, cardiac, adrenal, electrolyte or metabolic disorders. Interpretation should consider patient history, clinical findings, sodium, chloride, renal-function parameters, ECG findings where appropriate and other relevant investigations. Because haemolysis can significantly elevate measured potassium, specimen quality is especially important for this test. For open-system fully automatic and semi-automatic analysers, **instrument compatibility, application settings, calibration, quality control and analytical performance must be verified and validated by the laboratory before routine patient reporting**. The current Swemed package insert supplied with the actual product lot should always be treated as the definitive technical specification. # No Return / No Exchange Policy **This product is non-returnable and non-exchangeable.** Please verify the **brand, model, compatibility, pack size and product specifications before placing your order**. For laboratory reagents, customers should specifically verify the **test parameter, methodology, analyser compatibility, reagent configuration and pack size** before ordering. Genuine cases involving an **incorrect product received** will be handled separately according to Microsidd.com's applicable policies and applicable law. **An original, continuous, unedited and uncut unboxing video is compulsory for making any claim regarding an incorrect product received** ## Details - **Price:** 1700.0 INR - **Vendor:** Swemed Diagnostics - **Type:** Biochemistry Reagents - **Tags:** biochemistry ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 1700.00 INR | In stock | ## Images - Swemed Potassium Reagent 2x25ml Electrolyte Kit Microsidd - Swemed Potassium Reagent 2x25ml Electrolyte Kit Microsidd - Swemed Potassium Reagent 2x25ml Electrolyte Kit Microsidd - Swemed Potassium Reagent 2x25ml Electrolyte Kit Microsidd - Potassium Electrolyte Reagent Kit 2 × 25 ml – Turbidity / Tetraphenyl Boron Method --- > Source: [Microsidd India](https://microsidd.com/products/potassium-electrolyte-reagent-kit) > Updated: 2026-09-13