# Magnesium Electrolyte Reagent Kit 2 × 50 ml – Xylidyl Blue / EGTA Method # Swemed Magnesium Electrolyte Reagent Kit 2 × 50 ml The **Swemed Magnesium Electrolyte Reagent Kit 2 × 50 ml** is a professional clinical biochemistry reagent intended for the **quantitative determination of magnesium in serum and plasma** using the **Xylidyl Blue method**. Swemed’s official literature states that magnesium ions react with **Xylidyl Blue under alkaline conditions** to form a purple-red chelate complex. The intensity of the colour produced is directly proportional to the magnesium concentration in the specimen. Swemed’s current catalogue lists **Magnesium 2 × 50 ml**, product code **MAG 717**, with **EGTA** as the stated method classification and a 24-month shelf life. This product is intended for professional pathology laboratories, diagnostic centres, hospitals and clinical chemistry laboratories, including compatible **open-system fully automatic and semi-automatic biochemistry analysers** after method programming and laboratory validation. ## Product at a Glance Product Detail Information Product Name Magnesium Electrolyte Reagent Kit Brand Swemed Diagnostics Pack Size **2 × 50 ml** Product Code **MAG 717** Test Parameter Magnesium Method **Xylidyl Blue / EGTA Method** Assay Mode Endpoint Wavelength **505 nm** Temperature **37°C** Unit **mg/dL** Standard Concentration **2.0 mg/dL** Reaction Direction Increasing Reagent Volume **1000 µl** Sample Volume **10 µl** Incubation **10 minutes at room temperature** Measuring Range **1–5.0 mg/dL** Linearity **Up to 5.0 mg/dL** 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 parameters above are provided in Swemed’s official Magnesium insert. # Key Features - **Swemed Diagnostics Magnesium Reagent Kit** - Pack size: **2 × 50 ml** - Product code: **MAG 717** - **Xylidyl Blue / EGTA method** - Ready-to-use reagent - Ready-to-use magnesium standard - Endpoint colorimetric assay - Measurement wavelength: **505 nm** - Standard concentration: **2.0 mg/dL** - Sample volume: **10 µl** - Reagent volume: **1000 µl** - Incubation: **10 minutes at room temperature** - Measuring range: **1–5.0 mg/dL** - Linearity up to **5.0 mg/dL** - Suitable for serum and heparin plasma - Compatible with open-system semi-auto analysers - Compatible with open-system fully automatic analysers - For **professional in vitro diagnostic use only** # Why Magnesium Testing Is Important Magnesium is a major intracellular cation and plays an important role in: - Enzyme activation - Protein synthesis - Amino-acid activation - Neuromuscular function - Electrolyte balance - Renal and metabolic physiology Swemed notes that increased magnesium levels may occur in conditions such as **dehydration, Addison’s disease and uraemia**, while decreased levels may be seen in **malabsorption, chronic renal disease, chronic alcoholism, hyperthyroidism, pancreatitis and during treatment of diabetic coma**. Magnesium is commonly evaluated together with: - Sodium - Potassium - Chloride - Calcium - Phosphorus - Urea - Creatinine # Test Principle Magnesium ions react with **Xylidyl Blue in an alkaline medium** to form a coloured magnesium-Xylidyl Blue complex. The intensity of the purple-red colour formed is proportional to the magnesium concentration in the specimen. # Reagent Composition Component Manufacturer Specification Tris Buffer pH 10 24.2 g/L Xylidyl Blue 50.3 mg/L Potassium Carbonate 10.3 g/L EGTA 19.0 g/L Sodium Azide 500 mg/L Magnesium Standard **2.0 mg/dL** # Reagent Preparation Swemed states that: **The reagent and standard are ready to use.** This makes the product convenient for routine clinical chemistry workflows without reagent reconstitution. # Technical Specifications Parameter Swemed Specification Test Magnesium Method Xylidyl Blue / EGTA Mode Endpoint Wavelength **505 nm** Unit **mg/dL** Temperature **37°C** Standard Concentration **2.0 mg/dL** Reaction Slope Increasing Reagent Volume **1000 µl** Sample Volume **10 µl** Incubation **10 minutes at room temperature** Blanking Reagent Blank Measuring Range **1–5.0 mg/dL** Linearity **5.0 mg/dL** # Assay Procedure Summary Tube Reagent Standard / Sample Blank 1000 µl — Standard 1000 µl 10 µl Standard Test 1000 µl 10 µl Sample Mix and incubate for: **10 minutes at room temperature** Then measure the absorbance of the sample and standard against the reagent blank at: **505 nm**. # Calculation **Magnesium (mg/dL) = Absorbance of Sample ÷ Absorbance of Standard × Concentration of Standard** Manufacturer standard: **2.0 mg/dL**. # Compatible with Open-System Biochemistry Analysers The **Swemed Magnesium Reagent Kit** can be used with compatible open-system analysers that allow the required endpoint application to be programmed. Open-System Setting Magnesium Application Mode Endpoint Wavelength **505 nm** Temperature **37°C** Reagent Volume **1000 µl** Sample Volume **10 µl** Standard **2.0 mg/dL** Incubation **10 minutes at RT** Reaction Increasing Blank Reagent Blank Unit mg/dL Suitable analyser categories include: - **Open-system semi-automatic biochemistry analysers** - **Open-system fully automatic biochemistry analysers** - Programmable chemistry systems supporting 505 nm endpoint measurement The laboratory should verify analyser compatibility and validate the application before routine patient reporting. # Specimen Requirements Swemed lists: - **Serum** - **Heparin plasma** Fresh, clear, **non-haemolysed serum** is recommended. This is particularly important because erythrocytes contain higher magnesium concentrations than serum, so haemolysis can produce falsely elevated magnesium results. Swemed advises that visibly haemolysed specimens should not be used. # Anticoagulants to Avoid Swemed advises avoiding: - **EDTA** - **Sodium fluoride** - **Oxalate** because these substances can interfere with the assay. The manufacturer also notes that trace chelating agents such as **EDTA, oxalate and citrate** can prevent formation of the colour complex. # Specimen Stability Specimen Stability Serum / Plasma at 2–8°C **7 days** Contaminated specimens should be discarded. # Measuring Range and Linearity The assay is designed to measure magnesium concentrations in the range: **1–5.0 mg/dL** The stated linearity is: **5.0 mg/dL**. For samples above the measuring range, Swemed recommends dilution **1 + 1 with 0.9% NaCl**, repeating the test and multiplying the obtained result by **2**. # Important Laboratory Precautions Swemed specifically recommends: - Avoid visibly haemolysed specimens - Separate serum from the clot promptly - Avoid chelating agents such as EDTA, oxalate and citrate - Use clean glassware - Rinse glassware with **1% or 0.1 N HCl**, followed by good-quality deionised water before testing These precautions are especially important in magnesium testing because trace contamination or chelation can affect analytical performance. # Manufacturer Reference Range Population Manufacturer Reference Range Newborn **1.2–2.6 mg/dL** Children **1.5–2.3 mg/dL** Women **1.9–2.5 mg/dL** Men **1.8–2.6 mg/dL** Swemed recommends that each laboratory establish or verify its own reference interval for its patient population. # Storage and Stability Store the reagent: - At **18–30°C** - Protected from light - Protected from contamination - **Do not freeze** - Use only within the labelled expiry date Swemed lists possible signs of deterioration as: - Reagent blank absorbance at 505 nm above **1.0** - Visible particles - Turbidity The current Swemed catalogue lists a **24-month shelf life** for Magnesium when stored correctly. # Safety and Precautions The reagent contains **sodium azide preservative** and should be handled using routine laboratory safety precautions. Professional users should: - Wear suitable gloves - Use eye/face protection - Avoid skin or mucous-membrane contact - Never pipette by mouth - Follow current Good Laboratory Practice - Dispose of reagent according to institutional procedures # Magnesium in an Electrolyte / Renal Profile Parameter Laboratory Relevance Magnesium Intracellular mineral and enzyme-related function Sodium Extracellular fluid balance Potassium Cardiac and intracellular electrolyte balance Chloride Fluid and acid-base balance Calcium Mineral and neuromuscular function Phosphorus Bone and renal metabolism Urea Renal and protein metabolism Creatinine Renal filtration assessment # Who Can Buy This Product? Buyer Type Typical Application Pathology Laboratories Routine magnesium testing Diagnostic Centres Electrolyte and metabolic testing Hospital Laboratories Clinical chemistry investigations Nephrology Centres Renal and electrolyte monitoring Dialysis Centres Mineral and electrolyte testing Endocrinology Centres Metabolic and electrolyte investigation Clinical Chemistry Laboratories Routine magnesium estimation Medical Institutions Teaching and diagnostic laboratory use Healthcare Organisations Institutional procurement Laboratory Distributors Professional supply where permitted # Useful Tips Before Ordering - Confirm that **Magnesium – Xylidyl Blue / EGTA Method** is required. - Verify the pack size: **2 × 50 ml**. - Confirm analyser support for **505 nm endpoint measurement**. - Verify that your analyser is an **open system**. - Confirm sample volume: **10 µl**. - Confirm reagent volume: **1000 µl**. - Verify the standard concentration: **2.0 mg/dL**. - Avoid haemolysed samples. - Avoid EDTA, oxalate, citrate and sodium fluoride contamination. - Store reagent at **18–30°C**. - Do not freeze. - Perform calibration and internal quality control before routine use. # Buy Swemed Magnesium Reagent in Bangalore Microsidd India supplies **electrolyte reagents, renal-profile reagents and clinical biochemistry products from Bangalore / Bengaluru, Karnataka**. The **Swemed Magnesium Electrolyte Reagent Kit 2 × 50 ml** is suitable for pathology laboratories, diagnostic centres, hospitals, nephrology facilities, dialysis centres and professional clinical chemistry laboratories using compatible open-system analysers. The product can be ordered through **microsidd.com**, subject to stock availability and serviceability. # Search Relevance Relevant buyer searches include: - Magnesium reagent supplier in Bangalore - Swemed Magnesium Reagent Bangalore - Magnesium electrolyte reagent Bengaluru - Xylidyl Blue magnesium reagent India - Magnesium reagent 2 × 50 ml - Magnesium reagent for semi auto analyser - Magnesium reagent for fully automatic analyser - Open system magnesium reagent Bangalore - Electrolyte reagent supplier Bengaluru - Renal profile reagent supplier Bangalore - Clinical chemistry reagent supplier near me - Swemed Diagnostics magnesium reagent India - Laboratory reagent supplier in bangalore # Product Summary ### What is Swemed Magnesium Reagent Kit? The **Swemed Magnesium Electrolyte Reagent Kit 2 × 50 ml** is a ready-to-use professional clinical chemistry reagent for quantitative magnesium determination using the **Xylidyl Blue / EGTA endpoint method**. ### What method is used? Swemed’s product insert identifies the assay as the **Xylidyl Blue Method**, while the current catalogue classifies the product method as **EGTA**. ### What wavelength is required? **505 nm**. ### What is the sample volume? **10 µl**. ### What is the reagent volume? **1000 µl**. ### What is the magnesium standard concentration? **2.0 mg/dL**. ### What is the measuring range? **1–5.0 mg/dL**. ### What is the linearity? **5.0 mg/dL**. ### Which specimens can be used? **Serum and heparin plasma**. ### Why should haemolysed samples be avoided? Red blood cells contain more magnesium than serum, so haemolysis can cause falsely elevated results. ### Is the reagent ready to use? Yes. Swemed states that the **reagent and standard are ready to use**. ### Can it be used on semi-automatic analysers? Yes, on compatible **open-system semi-automatic biochemistry analysers** after method programming and validation. ### Can it be used on fully automatic analysers? Yes, on compatible **open-system fully automatic biochemistry analysers** that allow third-party reagent programming and support the required endpoint parameters. # Information Entity Details Product Magnesium Electrolyte Reagent Kit Brand Swemed Diagnostics Pack Size 2 × 50 ml Product Code MAG 717 Analyte Magnesium Method Xylidyl Blue / EGTA Mode Endpoint Wavelength 505 nm Unit mg/dL Specimen Serum / Heparin Plasma Clinical Category Electrolytes / Renal / Metabolic 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 Magnesium Reagent from Microsidd.com? Electrolyte and mineral reagents should be purchased only after verifying the **correct analyte, methodology, wavelength, sample type, pack size, storage requirements and analyser compatibility**. Microsidd India specialises in laboratory and diagnostic products and has long-standing experience in the IVD sector, helping professional buyers verify technical requirements before ordering. ## 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 Xylidyl Blue / EGTA can be confirmed Listing details may be limited Depends on dealer Pack Verification 2 × 50 ml can be checked Pack listing may vary Stock dependent Open-System Guidance Better suited to analyser-specific enquiries Often limited Dealer dependent Product Support Technical parameters can be checked before ordering General 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 Magnesium Reagent used for? It is used for quantitative determination of **magnesium in serum and plasma** using the Xylidyl Blue method. ### What is the pack size? **2 × 50 ml**. ### What method does it use? **Xylidyl Blue / EGTA Method**. ### What wavelength is required? **505 nm**. ### What is the assay mode? **Endpoint**. ### What is the sample volume? **10 µl**. ### What is the reagent volume? **1000 µl**. ### What is the standard concentration? **2.0 mg/dL**. ### What is the measuring range? **1–5.0 mg/dL**. ### What is the linearity? **5.0 mg/dL**. ### Is the reagent ready to use? Yes. Both the reagent and standard are **ready to use**. ### Can haemolysed samples be used? No. Swemed advises against visibly haemolysed specimens because erythrocytes contain high magnesium concentrations. ### Which anticoagulants should be avoided? **EDTA, sodium fluoride and oxalate** should be avoided. Trace citrate can also interfere because chelating agents prevent formation of the colour complex. ### How should the reagent be stored? At **18–30°C**, protected from light and contamination. Do not freeze. ### Can it be used on a semi-auto analyser? Yes, on compatible **open-system semi-automatic biochemistry analysers** after programming and validation. ### Can it be used on a fully automatic analyser? Yes, on compatible **open-system fully automatic analysers** supporting the required endpoint application. ### Is this 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**. Magnesium results should not be interpreted independently to diagnose or exclude renal, endocrine, gastrointestinal, metabolic or electrolyte disorders. Results should be correlated with clinical history, calcium, potassium, renal-function tests and other relevant investigations. Because haemolysis, chelating agents and glassware contamination can significantly affect magnesium measurement, correct specimen handling and laboratory technique are especially important. 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:** 1000.0 INR - **Vendor:** Swemed Diagnostics - **Type:** Biochemistry Reagents - **Tags:** Bio Chemistry Reagents, biochemistry ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 1000.00 INR | In stock | ## Images - Swemed Magnesium Reagent 2x50ml Xylidyl Blue Method Microsidd - Swemed Magnesium Reagent 2x50ml Xylidyl Blue Method Microsidd - Swemed Magnesium Reagent 2x50ml Xylidyl Blue Method Microsidd - Swemed Magnesium Reagent 2x50ml Xylidyl Blue Method Microsidd - Swemed Magnesium Reagent 2x50ml Xylidyl Blue Method Microsidd --- > Source: [Microsidd India](https://microsidd.com/products/magnesium-reagent) > Updated: 2026-09-13