Brass Electrodes

These high‑purity brass electrodes are composed of a 65 % copper and 35 % zinc alloy, each weighing 16 g and measuring 19 mm × 125 mm. Stamped with the identification code “BS” and supplied in individual packaging, they are suited for detailed physical and chemical investigations of brass alloys.

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Product Specifications

Material	High purity brass
Dimensions	19 mm × 125 mm (3/4 × 5 inches)
Weight	16 g
Composition	≈ 65 % copper, 35 % zinc
Identification Code	Stamped with “BS”
Caution	Metal electrodes have sharp edges.

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Applications and Benefits:

• Investigating the physical and chemical properties of brass alloys in chemistry labs.
• Demonstrating alloy composition and conductivity in educational settings.
• Adding to personal or institutional collections of metal specimens.

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Key Features and Benefits

• High‑purity brass ensures consistent experimental results.
• Precise dimensions (19 mm × 125 mm) facilitate standardized testing.
• Clear “BS” identification code simplifies sample tracking.
• Individual packaging protects each electrode from contamination.
• Sharp‑edge caution highlighted for safe handling.

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Caution:

Metal electrodes have sharp edges; handle with care to avoid injury.

Hand Counter, Fluorescent Green, Durable, Shock Resistant

The Hand Counter, Fluorescent Green, Durable, Shock Resistant is a robust hand tally counter designed for security, compliance, and general-purpose counting, featuring a self-supporting internal mechanism encased in a protective fluorescent green HDPE plastic shell for added durability and shock resistance. Weighing 42 grams and packaged in an individual box, this counter includes a finger ring for easy handling and is compatible as a replacement for models MS504, VG3509, HCOUNTER, CTR101M, and CTR101Y. The 4-digit display provides easy-to-read counting, and the ergonomic design ensures comfortable handling.

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Product Specifications

Model	MSJA144
Counting Range	0 to 9999
Display	4-digit
Shell Material	Durable HDPE plastic (high-density polyethylene, shock resistant)
Internal Frame	Self-supporting hard plastic
Color	Fluorescent Green
Handling Feature	Finger ring for secure grip
Dimensions	50 x 40 x 25 mm
Weight	42 grams
Width	33.1 mm
Diameter	46.4 mm
Material	HDPE plastic (high-density polyethylene)
Reset Button Color	Black
Counter Button Material	Metallic
Panel	Black with white numbers
Digital Support Ring	Metallic
Packaging	Individual box
Assembly	With two lateral rods

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Applications and Benefits:

• Used for counting people in security and compliance roles, where accuracy and durability are crucial
• Shock-resistant design for industrial or frequent-use environments, reducing the risk of damage
• Bright fluorescent green color for easy visibility, even in low-light conditions
• Ergonomic finger ring for secure one-hand use, allowing for comfortable handling and reduced fatigue
• Reliable replacement for several standard counter models, including MS504, VG3509, HCOUNTER, CTR101M, and CTR101Y, ensuring compatibility and convenience
• for crowd counting, event management, and statistical analysis, providing accurate and efficient counting solutions

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Key Features and Benefits

• Durable and shock-resistant design for extended use, with a robust HDPE plastic construction
• Easy-to-read 4-digit display, providing clear and accurate counting results
• Compatible with multiple counter models, ensuring versatility and convenience
• Ergonomic design for comfortable handling, reducing fatigue and improving usability
• Bright fluorescent green color for high visibility, making it easy to use in various environments
• Lightweight and compact, weighing only 42 grams, making it easy to carry and transport

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Caution:

Use only for manual counting applications. Avoid exposure to extreme heat or direct impact despite shock-resistant shell. Handle with care to ensure longevity and accuracy.

Small Steel Balls, 1/2 Inch

Polished, hardened steel balls with a diameter of 1/2 inch (about 12 millimeters) for mechanics and magnetism experiments. These balls can be used as a substitute for iron filings for studying the phenomenon of magnetic fields, as they form clusters and chains between unlike poles of magnets. Made of polished, hardened spheres.

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Product Specifications

Diameter	1/2 inch (about 12 millimeters)
Material	Polished, hardened steel
Uses	Mechanics and magnetism experiments, substitute for iron filings for studying magnetic fields

Note:

All dimensions listed are approximate and for general reference only. These products are not manufactured to scientific or precision-grade tolerances. Actual dimensions may vary up to ±5% from stated specifications due to manufacturing processes and environmental conditions. If your application requires exact measurements, please verify dimensions prior to buy.

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Applications and Benefits:

• Mechanics and physics enthusiasts
• Science teachers and students
• Magnetism experimenters
• Individuals interested in studying magnetic fields
• People looking for a substitute for iron filings
• Anyone looking for high-quality, polished steel balls

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Caution:

These steel balls are small and can pose a choking hazard. Keep out of reach of children and use with caution during experiments. Do not use near magnetic-sensitive electronics without proper shielding.

 

Steel Balls, 3/4" Diameter

 

Steel Balls 3/4" Diameter are small steel balls with a diameter of 3/4 inch (about 18 millimeters) that are commonly used in mechanics and magnetism experiments. These balls are a great substitute for iron filings when studying the phenomenon of magnetic fields, as they form clusters and chains between unlike poles of magnets. Made of polished, hardened spheres, these steel balls are durable and long-lasting. If you're looking for an interesting addition to your experiments or just need some high-quality steel balls, Steel Balls 3/4" Diameter are a great choice.

 

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Product Specifications

 
   
     
       
       
     
     
       
       
     
     
       
       
     
     
       
       
     
   
 

Product Name	Steel Balls 3/4" Diameter
Material	Steel
Diameter	3/4" (approx. 18mm)
Usage	Mechanics and magnetism experiments, magnetic field demonstrations, substitute for iron filings

 

Note:

 

All dimensions listed are approximate and for general reference only. These products are not manufactured to scientific or precision-grade tolerances. Actual dimensions may vary up to ±5% from stated specifications due to manufacturing processes and environmental conditions. If your application requires exact measurements, please verify dimensions prior to buy.

 

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Applications and Benefits:

 

   
• Mechanics and engineering students

   
• Science enthusiasts

   
• Teachers and educators

   
• Research laboratories

   
• DIY enthusiasts

   
• Magnetism experimenters

 

 

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Caution:

 
 

These steel balls are small, dense, and may pose a choking hazard or cause injury if misused. Keep away from children and use appropriate safety measures during experiments involving impact, magnetism, or motion.

 

Zinc Electrode, Flat, One Piece

The Zinc Electrode, Flat, One Piece is a high‑purity zinc sheet measuring 5 × ¾ in with a thickness range of 0.75 mm to 1 mm. It is stamped with the letters “Zn”, weighs 16 g, and is supplied as a single flat piece suitable for precise electricity and chemistry experiments as well as industrial die‑casting and alloy production.

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Product Specifications

Material	High‑purity Zinc Metal
Purity	High‑purity (≥99.9% Zn)
Identification	Stamped with letters “Zn”
Shape	Flat sheet
Dimensions	5 × ¾ in (127 mm × 19 mm)
Thickness	0.75 mm up to 1 mm
Weight	16 g
Piece Count	One piece
Primary Applications	Electricity experiments, Chemistry experiments, Die‑casting, Metal collections, Alloy production (brass, nickel‑silver, commercial bronze)

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Applications and Benefits:

• Conduct controlled electrochemical reactions in laboratory electricity experiments
• Serve as a reactant or electrode in chemistry experiments requiring zinc
• Provide a reliable source material for zinc‑based die‑casting processes in automotive, electrical, and hardware industries
• Contribute zinc content for the production of alloys such as brass, nickel‑silver, and commercial bronze
• Suitable for inclusion in metal collection sets due to identifiable “Zn” stamping

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Key Features and Benefits

• High‑purity zinc ensures consistent electrochemical performance
• Flat geometry and precise dimensions facilitate reproducible experimental setups
• Stamped “Zn” marking enables quick identification and inventory control
• Thickness range of 0.75 mm–1 mm balances mechanical strength with ease of handling
• Compact 5 × ¾ in size and 16 g weight allow easy storage and transport
• Malleable at 100 °C–150 °C, expanding usability for elevated‑temperature processes
• Compatible with a variety of industrial applications, including alloy formulation and die‑casting

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Caution:

Zinc is brittle at ordinary temperatures but becomes malleable between 100 °C and 150 °C; handle with care, especially when working at elevated temperatures.