ReviewsSell Copper Cathode

DC 5-12V/15-160V Stepper Motor Drive,PWM Adjustable Stepper Motor Controller Signal Generator Speed Regulator

  • Power supply: 15-160VDC or 5-12VDC. If you are using 5-12VDC power, positive end connect DC 5-12V Input, negative end connect Common Cathode End..
  • 3 Frequency: High: 5.8KHZ-127KHZ, Mid: 590HZ-15.8KHZ, Low: 82HZ-2.3KHZ.
  • To control the stepper motor, mus connect to the driver.
  • PUL + and PUL- pulsed positive and negative.
  • EN + and EN- is to enable the positive and negative terminals.
  • DIR + and DIR- are the positive and negative directions..
  • Frequency of measurement can amount PUL and common cathode terminal (GND) two ports..
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EDGELEC 120pcs 12V LED Lights Emitting Diodes, Pre Wired 7.9 Inch DC 12 Volt 5mm LED (6 Colors x 20pcs) Assorted Kit Diffused Colored Lens- White Red Yellow Green Blue Orange Small LED Lamps

  • Prewired with built in Resistor, 20000 hours+ Lifespan..
  • Product Overview: 120pcs Prewired DC 12V 5mm LED - Colored Lens (Diffused) Assorted Kit - 20Pcs x 6 Color (20pcs For Each Color - White / Red / Yellow / Green / Blue / Orange).
  • Product Features: Prewired LED For DC 12V (Preloaded 1/4w Metal Film Resistor) - 7.8 inch Wire Lead (7-Core Pure Copper & Tin-Coat At The End).
  • Product Parameters: The Anode: Colored Wire / The Cathode: Black Wire / Forward Voltage: DC 12V / Forward Current: 20mA / LED Viewing Angle: 120°.
  • Widely Applicable: DIY Hobby, Electronic Project, Decoration, Instruction And Lighting….
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EDGELEC 56pcs (7 Colors x 8pcs) 12 Volt LED Lights Emitting Diodes Pre Wired DC 12v 5mm LED Assorted Kit Clear Lens- White Warm-White Red Yellow Green Blue Orange Small LED Lamps

  • Prewired with built in Resistor, 20000 hours+ Lifespan..
  • Product Overview: 56pcs Pre-wired DC 12V 5mm LED - Clear Lens Assorted Kit - 8 Pcs x 7 Color (8pcs For Each Color - White / Warm White / Red / Yellow / Green / Blue / Orange).
  • Product Features: Prewired LED For DC 12V (Preloaded 1/4w Metal Film Resistor) - 7.8 inch Wire Lead (7-Core Pure Copper & Tin-Coat At The End).
  • Product Parameters: The Anode: Colored Wire / The Cathode: Black Wire / Forward Voltage: DC 12V / Forward Current: 20mA / LED Viewing Angle: 30°.
  • Widely Applicable: DIY Hobby, Electronic Project, Decoration, Instruction And Lighting….
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Pure Copper Pitcher 70 oz 2 Liter Handcrafted with Lid & Set of 2 Incredible Drinking Tumblers in Timeless Smooth Finish Raw Interior for For Ayurveda Health

  • HANDCRAFTED BY EXPERT ARTISANS: Our elegant PURE copper pitchers and tumblers are all hand made by skilled artisans using time-tested techniques that....
  • 100% PURE COPPER: Made for true enthusiasts, we don't use any nickel, tin or other metals in the construction of our copper pitchers and tumblers.....
  • NEW TUMBLERS: You asked for it and we delivered! Not just any tumbler, but one of the very finest you will ever find. Our tumblers are made from the....
  • INTERIOR TARNISH IS NORMAL!: Our copper products are constructed with no inside liner / coating, our pitchers and cups promote the ayurvedic health....
  • LIFETIME WARRANTY: We stand behind everything we sell! If our product every lets you down, and we will replace it or provide a refund. We couldn't do....
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uxcell Common Cathode 10 Pin 1 Bit 7 Segment 1.1 x 0.79 x 0.35 Inch 0.55\ Red LED Display Digital Tube 10pcs

  • Panel Size: 19 x 12.7 x 8mm / 0.75" x 0.5" x 0.31" (L*W*H).
  • Total Size: 19 x 12.7 x 14mm / 0.75" x 0.5" x 0.55" (L*W*H).
  • Package Content: 10 x LED Digital Display Tube.
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uxcell Common Cathode 10 Pin 2 Bit 7 Segment 1.41 x 1.02 x 0.39 Inch 0.8\ Red LED Display Digital Tube 2pcs

  • Panel Size: 35.8 x 25.8 x 10mm / 1.41" x 1.02" x 0.39" (L*W*H).
  • Total Size: 35.8 x 25.8 x 14mm / 1.41" x 1.02" x 0.55" (L*W*H).
  • Package Content: 2 x LED Digital Display Tube.
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uxcell Common Cathode 10 Pin 2 Bit 7 Segment 0.59 x 0.55 x 0.28 Inch 0.35\ Red LED Display Digital Tube 5pcs

  • Panel Size: 15 x 14 x 7.2mm / 0.59" x 0.55" x 0.28" (L*W*H).
  • Total Size: 15 x 14 x 13.5mm / 0.59" x 0.55" x 0.53" (L*W*H).
  • Package Content: 5 x LED Digital Display Tube.
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uxcell Common Cathode 12 Pin 4 Bit 7 Segment 1.18 x 0.55 x 0.28 Inch 0.35\ Red LED Display Digital Tube 5pcs

  • Panel Size: 30 x 14 x 7.2mm / 1.18" x 0.55" x 0.28" (L*W*H).
  • Total Size: 30 x 14 x 13.5mm / 1.18" x 0.55" x 0.53" (L*W*H).
  • Package Content: 5 x LED Digital Display Tube.
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uxcell Common Cathode 11 Pin 3 Bit 7 Segment 0.89 x 0.55 x 0.28 Inch 0.35\ Red LED Display Digital Tube 5pcs

  • Panel Size: 22.5 x 14 x 7.2mm / 0.89" x 0.55" x 0.28" (L*W*H).
  • Total Size: 22.5 x 14 x 13.5mm / 0.89" x 0.55" x 0.53" (L*W*H).
  • Package Content: 5 x LED Digital Display Tube.
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Apera Instruments, LLC-AI1312 Apera Instruments 201T-S pH/Temp. Electrode, 8-pin Connector, The Replacement Electrode for Apera 400/400S Series Portable Meters

  • 3.Glassy carbon electrode is one of the widely used working electrodes. It is a good inert electrode with good conductivity, high hardness, high finish, high hydrogen overpotential, wide polarization range and chemical stability. It can be used as inert electrode for anodic stripping, voltammetric determination of cathode and variable valence ions, and can also be used as chemically modified electrode.
  • 4.The glassy carbon surface must be mirror and clean. Since the surface of glassy carbon is easily polluted by some organic metal compounds, which seriously affects the measurement (no peak, no impurity peak and no recurrence), it must be cleaned before measurement.
  • 5.There are three main maintenance methods, chemical method 1. Nitric acid immersion and scrubbing. 2. Soak and scrub with ammonia water, anhydrous ethanol or acetate 1:1. 3. It can also be scrubbed with alcohol and then soaked in 6nhcl or 4nho3. Electrochemical treatment: repeated polarization (reset scan) (anode cathode to cathode) in the voltage range of + 0.8V - (- 1.8V (0.5mkclph7 except o2i).
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Pure Soft Lead Ingot

  • ✔️ PEWTER INGOT 2LBS - 97LF - 97% TIN | 2.5% Bismuth | 0.5% COPPER. Our Pewter Ingots are approximately 2 pounds each and are made up of 97% Tin, 2.5% Bismuth, and 0.5% Copper. This is lead-free pewter and is very good to use for casting. We sell this Pewter in ingot form as shown in the product images. This type of Pewter is also known as Britannia Alloy. Be sure to see our promotional discounts for certain quantity levels if you would like to save money. MADE IN THE USA..
  • ✔️ USAGE - This is lead-free pewter and is very good to use for casting. It melts easily and retains its shine. This pewter is used often in jewelry making and also making utensils, teapots, candlesticks, urns, maces, and drinking vessels. This item is one of our best sellers because of its versatility and ease of use..
  • ✔️ SIZE - Each 2lb pewter ingot is approximately 4.25 inches long by 2 inches wide by 1.25 inches high.
  • ✔️ SPECIFICATIONS - Melting Point (F) = 563 | Pouring Temp (F) = 650 | Density (g/cm3) = 7.28 | Analysis: TIN 92%, BISMUTH 2.5%, COPPER 0.5%..
  • ✔️ PACKAGING - This 2lb pewter ingot will arrive sealed in heavy duty BPA free plastic to prevent any corrosion or oxidation. Each 2lb ingot is guaranteed to be 2lbs plus or minus 4%..
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