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Description
642B Horizontal Single-Speed Clinical Laboratory CentrifugeOverview The Model 642B is Drucker Diagnostics' most affordable horizontal centrifuge. The 642B offers single speed processing, simple controls, and an adjustable mechanical timer to meet a variety of blood specimen preparation needs. Set to run at a constant 1,600 xg, users can easily adjust cycle time from 1 to 30 minutes. Horizontal rotor, universal tube holders, and 2 year warranty are included. Max speed 1,600 xg 3,400 RPM. Designed, built, and
Overview
The Model 642B is Drucker Diagnostics' most affordable horizontal centrifuge. The 642B offers single-speed processing, simple controls, and an adjustable mechanical timer to meet a variety of blood specimen preparation needs. Set to run at a constant 1,600 xg, users can easily adjust cycle time from 1 to 30 minutes. Horizontal rotor, universal tube holders, and 2-year warranty are included. Max speed 1,600 xg/3,400 RPM. Designed, built, and supported in the USA.
Features:
- Single g-force setting of 1,600 xg
- Easily adjustable mechanical timer can be set from 1 to 30 minutes
- Max speed 1,600 xg/3,400 RPM
- 6 tube capacity (75-100 mm/0.5-10 mL)
- Small footprint, perfect for labs where space is at a premium
- Clear, shatterproof lid and reinforced guard bowl for maximum safety
- Cool-Flow air flow design prevents overheating of samples
- Removable rotor core for easy cleaning
- Horizontal rotor, tube holders, and 2-year warranty (lifetime on rotor) included
- Designed, built, and supported in the USA
Key Attributes
| RPM | 3,400 |
| RCF | 1,600 xg |
| Refrigeration | No |
| Capacity | 6 tube capacity (75-100 mm/0.5-10 mL) |
| Warranty (years) | 2 |
Manufacturer Specifications
Height – 8.75 in. (22 cm)
Width – 11.75 in. (30 cm)
Depth – 14.0 in. (35.5 cm)
Weight – 11 lbs. (5 kg)
Max. Acceleration Time – 10 Seconds
Max. Deceleration Time – 80 Seconds
Timer – Mechanical, 1 to 30 Minutes; Preset to 10 Minutes
Voltage – 115 (± 10) Volts
Frequency – 50/60 Hz
Max. Power Requirements – 165 Watts
Protection Breaker – 4 Amp. Re-settable
Max Speed – 3,400 RPM
Max G-Force – 1,600 xg (RCF)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 2031 reviews
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Product Reviews
★★★★★ 5
Easy and simple: Exact Step-by-Step Guide to Reloading Your Balance
Reload type: One Time Reload
I found reloading my Amazon gift card balance much easier than expected. The process was simple and took about 5 minutes at most. Here are the exact steps to do it:
Login: In the Amazon app or on Amazon.com, log in to your account.
Menu: Tap the 3 lines on the bottom right corner of your screen (next to Rufus, Amazon's AI).
Find Category: In the section highlighted "Shop by category," tap on Gifting & Registry (3rd option down in that section) and a drop-down menu will appear.
Select Gift Cards: On the drop-down menu, tap Gift Cards (first option).
Choose Your Action: "The Gift Card Shop" will appear. There you will have three options: "Redeem a gift card," "View your balance," and "Reload."
Start Reload: To add funds, tap Reload.
Select Type: Scroll down to "Add funds directly to your Amazon Gift Card balance" and tap which reload type you want (one-time, low balance auto-reload, or scheduled auto-reload).
Enter Amount: Choose your reload amount. The default is $25, but you can type in your own amount as well (the minimum amount is $5.00).
Finish: Tap the orange "Buy Now" tab.
***I used the Amazon app using the u i OneUI version 8.0 these Amazon app on Android version 16 (Baklava) on a Samsung Galaxy S25 Ultra. Others may have a slight variation of the menu setup on the Amazon app.***
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Easy way to add balance
Reload type: One Time Reload
Reloading my Amazon gift card balance has been easy and convenient. I like using it when I want to keep a little money set aside for Amazon orders or make checkout quicker without thinking about which card I want to use. The process is straightforward, the balance shows up fast, and it has been reliable every time I have used it. It is also helpful for budgeting because I can add a set amount and then use that balance for regular purchases. Nothing complicated about it, which is exactly why I like it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
★★★★★ 5
Great for Budgeting – Instant Balance and Easy to Use
Reload type: One Time Reload
I use Amazon’s gift card reload feature to plan my spending. It’s perfect when I know I want to make a purchase but prefer to set the funds aside first.
I love that it’s immediate—no worries about pending charges or accidental spending from my card. It gives me peace of mind knowing that when I’m ready to buy, the balance is just sitting there, waiting.
Pros: easy to use, instant balance update, helps with budgeting and avoiding overspending
Cons: funds are locked into Amazon once reloaded, doesn’t count toward certain account requirements like review eligibility
Overall, it’s a convenient and reliable way to manage spending on Amazon, especially if you like having control over your purchases.
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Reviewed in the United States on May 1, 2026
★★★★★ 5
I did this with a pay in 4. It made it super simple for a higher balance.
Reload type: One Time Reload
I’ve used this to reload my balance a few times, and it’s been simple and reliable. The process is quick, and the funds show up without any delays or issues.
It’s a convenient option when you want to control spending or keep purchases separate without using a card each time. Everything is straightforward and easy to manage.
I haven’t run into any problems with transactions or balance updates. It’s been consistent every time I’ve used it.
Overall, it’s an easy and dependable way to keep funds ready to go without any hassle.
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Reviewed in the United States on May 6, 2026
★★★★★ 4
Great for keeping bank statements clean but random security delays are frustrating
Reload type: One Time Reload
I use the balance reload tool to manage my monthly budget and easily hit credit card sign-up bonuses. It keeps my bank statements totally clean by grouping dozens of tiny e-book and movie rental charges into one single transaction. Most of the time the whole process works flawlessly and the money shows up in my account within five minutes. It is honestly the easiest way to put a hard limit on my family's everyday online shopping.
You just need to watch out for a few annoying system quirks when you load larger amounts of money. Even though it usually works instantly the automated security filter sometimes flags big reloads and freezes the transaction for hours. This random delay is incredibly frustrating if you are trying to add cash fast to catch a lightning deal before it expires. You also have to remember that this balance is strictly non-refundable and cannot be used to buy other gift cards.
Overall this is still a great method for organizing online spending and maximizing your cash-back credit card rewards. It totally fixed how I track household purchases but you definitely have to tolerate the occasional processing delays. My best advice is to load your account a day or two before you actually need to buy a big-ticket item. It works perfectly as a budgeting tool as long as you know the rules and plan for the random security hold.
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Reviewed in the United States on April 14, 2026