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Description
IKA RW 20 Digital Overhead StirrerOverview The bestseller in the laboratory: With digital display Robust, slimline, ergonomic design Technical improvements on the trusted RW 20 series designs With constant power drive Two speed ranges for universal use from 60 2,000 rpm Push through agitator shafts (only when stationary) For stirring quantities of up to 15 l (H2O) Key Attributes Maximum volume (L): 20 Minimum Volume (L): N A Speed max (rpm): 2000 Speed min (rpm): 60 Max temperature
Overview
The bestseller in the laboratory:
- With digital display
- Robust, slimline, ergonomic design
- Technical improvements on the trusted RW 20 series designs
- With constant power-drive
- Two speed ranges for universal use from 60 - 2,000 rpm
- Push-through agitator shafts (only when stationary)
- For stirring quantities of up to 15 l (H2O)
Key Attributes
| Maximum volume (L): | 20 |
| Minimum Volume (L): | N/A |
| Speed max (rpm): | 2000 |
| Speed min (rpm): | 60 |
| Max temperature (◦C): | N/A |
| Plate: | N/A |
| Plate material: | N/A |
| Torque max (Ncm): | 150 |
| Controls: | Digital |
| Timer: | No |
| Programmable: | No |
| Reverse rotation: | No |
| Warranty (years): | 2 |
| Weight (lbs): | 6.8 |
| Dimensions Width (in): | 3.5 |
| Dimensions Height (in): | 11.6 |
| Dimensions Length (in): | 8.4 |
Manufacturer Specifications
| Stirring quantity max. per stirring position (H2O) | 20 l |
| Motor rating input | 85 W |
| Motor rating output | 35 W |
| Speed display | LED |
| Speed range | 60 - 2000 rpm |
| Viscosity max. | 10000 mPas |
| Output max. at stirring shaft | 26 W |
| Permissible ON time | 100 % |
| Torque max. at stirring shaft | 150 Ncm |
| Torque max. at stirring shaft at 60 1/min (overload) | 300 Ncm |
| Torque max. at stirring shaft at 100 1/min | 150 Ncm |
| Torque max. at stirring shaft at 1.000 1/min | 24 Ncm |
| Speed range I (50 Hz) | 60 - 500 rpm |
| Speed range II (50 Hz) | 240 - 2000 rpm |
| Speed range I (60 Hz) | 72 - 600 rpm |
| Speed range II (60 Hz) | 288 - 2400 rpm |
| Speed control | stepless |
| Setting accuracy speed | 1 ±rpm |
| deviation of speed measurement | 30 ±rpm |
| Stirring element fastening | chuck |
| Temperature display | no |
| Chuck range min. diameter | 0.5 mm |
| Chuck range max. diameter | 10 mm |
| Hollow shaft, inner diameter | 10.5 mm |
| Hollow shaft (push-through - when stopped) | yes |
| Fastening on stand | extension arm |
| Extension arm diameter | 13 mm |
| Extension arm length | 160 mm |
| Torque display | no |
| Nominal torque | 1.5 Nm |
| Timer | no |
| Dimensions (W x H x D) | 88 x 294 x 212 mm |
| Weight | 3.1 kg |
| Permissible ambient temperature | 5 - 40 °C |
| Permissible relative humidity | 80 % |
| Protection class according to DIN EN 60529 | IP 20 |
| RS 232 interface | no |
| USB interface | no |
| Analog output | no |
| Voltage | 220 - 240 / 100 - 115 V |
| Frequency | 50/60 Hz |
| Power input | 87 W |
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
4.9 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
BEST sunscreen! No greasy/sticky residue!
Size: 6 Fl Oz (Pack of 2), Style: Lotion
I HATE putting on sunscreen! They’re always greasy yet somehow leave your skin feeling sticky at the same time (especially the spray on kinds)?! Most of them have a super strong smell, and even if it’s a good smell it’s so strong it ends up giving me a headache. A couple years ago Coppertone came out with a whipped sunscreen that I was borderline obsessed with! It changed my life when it came to the dread of putting on sunscreen. It was moisturizing, but not greasy. It left not a hint of stickiness, and it didn’t not have an overwhelming smell! I was ecstatic! I had it set to auto deliver the double pack all summer long! My whole family and extended family also loved it! Well, the very next summer they discontinued it and my family and I (especially) we’re devastated! They didn’t even come out with something similar. It was just gone! Since then I’ve been searching for any kind of comparable sunscreen to no avail! I’ve tried them all! Then, about a month ago I found this one!! This is it!! It’s only as good as the coppertone whipped, but in some ways it’s better!! It’s not greasy or sticky at all. It spreads easily and has the softest, lightest, most amazing smell as well! It feels like I’m putting on my favorite lotion! Plus, no one in my family has gotten the slightest bit burned! Even my beautiful porcelain skinned 4 year old daughter who you have to drag off the beach or out of the pool when the sun goes down because she thinks she’s a mermaid! 🤣 I have nothing bad to say about this sunscreen!! I have stocked up just in case…. But Please please please don’t discontinue it!! 🙏🏻🙏🏻
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Reviewed in the United States on July 19, 2022
★★★★★ 5
Better than Shiseido for a fraction of the price
Size: 6 Fl Oz (Pack of 2), Style: Lotion
I bought this sunscreen for a trip to Florida but now it's my everyday sunscreen. My job includes driving around to body shops so my hands get a lot of sun, and I'm too embarrassed to wear driving gloves. I was using Shiseido's clear sunscreen stick (also SPF 50+) but had a slightly noticeable tan line at my wrist, both from my jacket and my watch so I wasn't sure if it was really working, despite the good reviews (and $$). This Banana Boat sunscreen feels so good that I decided to try it out for my hands every day, and it's fantastic. Smells good, not greasy at all it soaks right in, and the best part is my tan line is GONE. 10/10 please don't ever discontinue or change the formula.
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Reviewed in the United States on December 4, 2025
★★★★★ 5
The best sunblock I've found!
Size: 6 Fl Oz (Pack of 2), Style: Lotion
I absolutely love this sunblock. I have sensory issues with any type of lotion and sunblock, but this stuff is incredible. It really is so lightweight that once it fully soaks in (which only take a few minutes) it feels as if there's nothing on my skin. This is huge for me, cause I just can't handle the feeling of any other sunblocks I've tried, even some more expensive brands. On top of all that, it definitely protects my skin from the sun, doesn't leave a white cast, and doesn't feel greasy while applying it.
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Reviewed in the United States on April 12, 2026
★★★★★ 4
My favorite sunscreen for being active outside
Size: 6 Fl Oz (Pack of 2), Style: Lotion
I bought this last summer and now it's my go-to. I love it. It absorbs quickly, is very easy to just smear on, and has a nice, very light scent. I wear it when I go running and I sweat like a maniac so that tells you something.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Possibly the best sunscreen on the US market
Size: 6 Fl Oz (Pack of 2), Style: Lotion
I'm a self-confessed sunscreen snob. I love trying new formulas, and I came to the conclusion years ago that US formulas aren't usually for me. We haven't had a new filter approved by the FDA since the last millennium, and our products reflect that. I can't tell you how many times I spent $40+ on 1.7oz of sunscreen that I ended up hating before I switched to mostly Korean sunscreens; and most of the US sunscreens I like can be described as "good...for a US formula."
In short, I didn't have high hopes for this, and I was very pleasantly surprised. This is a very, very good sunscreen even among non-US formulas. It's lightweight, doesn't make my oily skin shiny, and dries down entirely so it doesn't feel tacky or slimy. I can layer over and over throughout the day without pilling or streaks. It also comes in a huge tube for a very low price. The only possible downside is that it's fragranced, which isn't a deal breaker for me. I wish they still sold the 3oz facial version because it's travel-friendly, but from what I can tell, it's the same formula.
Try this, especially if you hate thick, heavy, shiny sunscreens. Unless you can't do fragrance, I think you will be very happy with it.
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Reviewed in the United States on August 4, 2025
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