In 2020, the annual big wiper test turned out to be something out of the ordinary.The fact is that it was done with an eye on the results of our last four-month winter test in real conditions.Then, we recall, cheap Alca brushes failed, Bosch wipers showed mixed results, expensive Valeo won, and our choice fell on the most balanced - American Goodyear.This time we took eight sets, among which there are two variants of Alca and Bosch at once, as well as one more ACDelco brushes from USA.So, to the lab!The second stage of the test was to check the performance of the frozen brush.The wipers were placed in a freezer with a temperature regime of -40 ° C and exposure for a day, after which they immediately went to work.The quality of glass cleaning in this test was carried out using tap water, which had a temperature of +24 °C.Taking into account the temperature contrast, a kind of imitation of the conditions of a frosty winter is obtained using a warm liquid, in the role of which, in real conditions, a liquid anti-icing agent usually acts.Recall that according to the regulations, the wiper blades must be operational at temperatures from -50 to +60 ° C.Expert commentary.The rubber bands of the Bosch Twin brushes have lost their original linear shape: due to the swelling of the rubber, the cleaning edge of the brush began to wave.Alca Special and Alca Start began to creak after this stage of the test when installed on the stand.Rusting brothers: Goodwill, Alca, Airline and, to a lesser extent, ACDelco wipers corrodeAlca Special and Alca Start - wiper frames have small pockets of corrosion, but the plates holding the rubber band are covered with numerous stains and rust stripes.2nd place Airline AWB-K-600 and Alca Start (14.4/14.6 points) Due to the minimal gap - in fact, the error in the difference in results - we give the second place to two brushes at once.Another all-weather wipers resistant to washer fluid are produced by the St. Petersburg company Airline.Separately, it is worth noting their democratic price.Among the shortcomings are the same flaws during the initial cleaning, as well as the extremely mediocre quality of the color, which, however, affects only aesthetics.Alca Start brushes, having good initial cleaning parameters, passed all stages of testing with virtually no loss of properties due to exposure to heat, alcohol and cold.The price is also one of the lowest.The disadvantages include a tendency to squeaks, low corrosion resistance and glass cleaning mainly in two passes of the janitor.Bosch Twin and Denso DM-560 (16.1/16.6 points) Another pair - this time bronze medalists.Bosch Twin let down a little difficult operating conditions: they freeze in the cold and swell due to exposure to washer fluid.In less harsh realities, they show very good cleaning results with a double pass, as well as a complete absence of corrosion.Denso brushes are extremely heat and washer fluid resistant and highly corrosion resistant.They clean well, but flaws appear in the cold.Oddly enough, there are questions about the build quality due to the backlash in the frame joints.In addition, the cost of eminent wipers will seem overpriced to many.5th place Alca Special — 18.8 points The second model of the manufacturer Alca, despite being more expensive, showed mediocre results.More than half of the tested samples "streak", squeak due to exposure to washer fluid and leave uncleaned stripes in the cold.Up to the heap, the frame of the brushes is highly susceptible to corrosion.The results turned out to be quite mixed: if Bosch brushes regularly find themselves in prizes, Goodyear products showed very good results in our "frameless" test, then Alca and Heyner wipers "float" in terms of quality, but they have a good distribution and an attractive price, which is apparently affects their popularity.1. Alca Winter 2. Bosch Twin Spoiler 3. Alca Special 4. Heyner Exclusive Speed ​​5. Goodyear Winter Wiper BladeWebsite development — Zet Graphics • Design — Engine