Christophe Beck
President and Chief Executive Officer at Ecolab
Thank you so much, Mike, and good afternoon everyone. I'm very pleased, we saw the team continued to execute in our Q1. In a rapidly changing environment we remain focused on what we could control like new business, pricing, innovation and exceptional customer service. While we continued to manage extremely well, what we could not totally control like obviously, inflation, COVID restrictions and now the war in Eastern Europe. We started '22 actually with strong momentum as our fundamental business drivers continued to improve, which is most important to me. Fixed currency organic sales growth accelerated to 12%, with 7% of that led by volume gains from strong demand and new business generation. Institutional & Specialty, as you just heard, led the quarter with 19% organic growth continuing its strong recovery when Industrial further strengthened its already healthy momentum by delivering 12% organic growth, which is even better than what they delivered in Q4.
Our margins were also trending very well for most of the first quarter, even ahead of our own expectations as we were on a path to nicely overcome the significant delivered product cost inflation until the war in Eastern Europe started. As we all know, this had a major impact also on global energy cost, which impacted the last few weeks of the quarter. This spike cost added an unexpected incremental $0.04 a share in the last months alone, resulting in a total unfavorable impact from delivered product cost inflation of $0.55 per share in the first quarter, close to 70% of our ultimate Q1 earnings. Importantly, we overcame the significant headwind thanks to accelerated pricing, which rose from from 5 -- 3% in the fourth quarter to 5% in the first quarter. And most importantly, we did all this while maintaining strong momentum in demand, new business, pricing and productivity, the fundamentals of Ecolab,
So based on what we see today and the actions we have already taken, I remain really confident in our ability to continue to deliver strong top line growth and accelerated pricing in '22 to get ahead of this new energy cost and ti see our margins turned positive during the second half to deliver a strong full year 2022. Even if the path to get there has now changed quite a bit, once again, the unexpected rapid rise of oil and gas cost during the last months of the first quarter, will now impact three full months of the second. We therefore had to react boldly and we did. We decided to implement a global energy surcharge, a very first for Ecolab, which will now come on top of our increasing long-term structural pricing. And once fully implemented the surcharge should then behave as an offset to what we expect to be short term but incremental energy cost inflation.
Now, we started second quarter, naturally with 100% of the incremental energy cost but zero percent of the energy surcharge as its implementation started on April 1. Because of this, we now expect the second quarter to see the most acute squeeze in the year between price and delivered product cost inflation. Occurring at the same time, the surcharge is being implemented with customers around the world, but early progress is very encouraging. As the energy surcharge progressively rolls out, we should see the bulk of the surcharge primarily impact the second half of the year and somewhat the second quarter. And accordingly this initial benefit from the surcharge, along with accelerating structural pricing, strong volume growth and productivity gains should help us drive our second quarter delivery with earnings that approach last year's 122.
And finally, as it has been demonstrated over and over again at Ecolab, when challenging times strike, we make absolutely sure we protect what matters, our people, our customers and our company. Over the past few years when we could have reduced our workforce to manage short-term costs, we protected our global team, one of the key reasons why today, our customer retention remains so high. We also protected our customers with major breakthrough innovation like Ecolab Science Certified, one of the key reasons why today, our new business generation remains so strong. And we protected our company by investing in digital technology, one of the key reasons why today our productivity keeps improving. This approach has also demonstrated over and over again that our model starts generating significant margin leverage when cost inflation stabilizes and structure pricing sticks. So with continuing strong demand for our unique solutions that prevent infection and protect natural resources when customers need them the most, we expect organic sales growth to remain in double-digit territory for the rest of the year.
With structured pricing rising between 6% to 7% for the balance of the Europe and an energy surcharge that we progressively act as an offset for the spike in energy costs, we expect operating margin comparison to turn positive sometime during the second half of the year. This should then support our early expectations to deliver full-year earnings growth that reaches the low teens understanding, as you've heard, that there is uncertainty in the timing of the realization of the surcharge and naturally the pace of inflation, but this will become more clear as we exit the second quarter. And also, let's forget on our full year delivery includes $0.26 of Purolite, amortization of 5% of EPS. And as that momentum extends beyond '22, we expect to show Ecolab's hallmark of consistent, superior earnings growth for the many years to come.
I look forward to your questions.